SE4HS920Bluetooth Headset

– - 1 - Bluetooth Headset ’ – - 2 - ƒ ƒ ƒ – - 3 - – - 4 - – - 5 - ƒ ƒ – - 6 - – - 7 - – - 8 - FCC ID: SE4HS920 THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. Operation is subject to the following two conditions; (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. CAUTION: Changes or modifications not expressly approvedby the party responsible for compliance could void the user’s authority to operate the equipment.

Block Diagram DC Jack (DC 5V) Charger IC (BQ2057CDGK) Regulator (5V Æ 3V3) BATTERY 5V 3V3 Indication LED BATT Monitoring BALUN FILTER (AMBP2450C25) ANT SPEAKER MIC SPI CONUART CON EEPROM (AT24C128U2-10UI-1.8) 3V3 16MHz 3 4 4 4 3V3 SW × 4 BC02 HEADSET_EXTRA TX_A TX_B VREG_IN XTAL SPKR MIC PIO(2:5) PIO(6:8) UART SPI AIO(0)

Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD21046 TO WHOM IT MAY CONCERN Pursuant to Paragraphs §0.457 and 0.459 of the Commission's Rules (47 C.F.R) and Section §552(b)(4) of the Freedom of Information Act, INSUNG Electronics Co., Ltd. requests confidentiality for the following products: FCC ID Number Product Title / Model SE4HS920 Bluetooth Headset / HS920 For the product stated above, we request that the following information be held confidential: 1) Schematic diagrams 2) Bill of materials (Part List) No other items submitted as part of the equipment authorization filing process are deemed confidential. The above exhibits contain INSUNG Electronics Co., Ltd. trade secrets and proprietary information that could be of benefit to our competitors regarding the design of our products. This material is not customarily available to the general public and we request that it be withheld from public inspection. Sincerely, Bum-Min Yoo / Manager 421 Wonchon-dong, Yongtong-gu, Suwon, 442-823 South Korea TEL: +82-31-273-1416, FAX: +82-31-273-1418 http://www.insungelectronics.com/

SK TECH CO., LTD. Page 1 of 3 SKT SKTTRT-050422-007 FCC ID: SE4HS920 External Photographs of EUT <Photograph 1: Front View> SK TECH CO., LTD. Page 2 of 3 SKT SKTTRT-050422-007 FCC ID: SE4HS920 <Photograph 2: Rear View> SK TECH CO., LTD. Page 3 of 3 SKT SKTTRT-050422-007 FCC ID: SE4HS920 <Photograph 3: AC/DC Adaptor >

SK TECH CO., LTD. Page 1 of 1 SKT SKTTRT-050422-007 FCC ID: SE4HS920 FCC ID Label Location & Sample Label is permanently attached on the rear of the product LABEL LOCATION LABEL SAMPLE FCC ID: SE4HS920

SK TECH CO., LTD. Page 1 of 3 SKT SKTTRT-050422-007 FCC ID: SE4HS920 Internal Photographs of EUT <Photograph 1: Cover removed> SK TECH CO., LTD. Page 2 of 3 SKT SKTTRT-050422-007 FCC ID: SE4HS920 <Photograph 2: Front View > SK TECH CO., LTD. Page 3 of 3 SKT SKTTRT-050422-007 FCC ID: SE4HS920 <Photograph 3: Rear View >

Operational Description This product, HS920, is a wireless Headset based on the Bluetooth technology. The product operates in 2400 to 2483.5 MHz band. The channel is represented by a pseudo-random hopping sequence through the 79 channels. The channel is divided into time slots, with a nominal slot length of 625μs, where each slot corresponds to different RF hop frequencies. The nominal hop rate is 1600 hops/s. The symbol rate on the channel is 1 Ms/s. The control signals and data in the BC02-HEADSET-EXTRA is modulated and processed and pass the PA in the chip. They output from the chip and through the BALUN and FILTER. Last they will be transmitted from ANT to another Bluetooth device. The RF signal from other Bluetooth device is received via ANT. And they through FILTER and BALUN into the BC02-HEADSET-EXTRA chip. They are magnified by internal LNA in the chip. Power source The product is operated from DC 3.7V Li-Polymer battery that is rechargeable by the AC/DC adaptor. Antenna The product has a SMD Chip antenna manufactured by AMOTECH Co., Ltd., model ALA131C3 that has the directional gain of maximum 2.47 dBi. No external ground is required.

SK TECH CO., LTD. Page 1 of 39 SKT SKTTRT-050422-007 FCC ID: SE4HS920 Certificate of Compliance Test Report No.: SKTTRT-050422-007 NVLAP CODE: 200220-0 Applicant: INSUNG Electronics Co., Ltd. Applicant Address: 421 Wonchon-dong, Yongtong-gu, Suwon, 442-823 South Korea Device Under Test: Bluetooth Headset FCC ID: SE4HS920 Model No.: HS920 Receipt No.: SKTEU05-0238 Date of receipt: April 11, 2005 Date of Issue: April 22, 2005 Location of Testing: SK TECH CO., LTD. 820-2, Wolmoon-Ri, Wabu-Up, Namyangju-Si, Kyunggi-Do, Korea Test Procedure: ANSI C63.4 Test Specification: 47CFR, Part 15 Rules Equipment Class: DSS - Part 15 Spread Spectrum Transmitter Test Result: The above-mentioned device has been tested and passed. Tested & Reported by: Jong-Soo, Yoon 2005.04.22 Approved by: Jae-Kyung, Bae 2005.04.22 Signature Date Signature Date Other Aspects: - Abbreviations: · OK, Pass = passed · Fail = failed · N/A = not applicable ☞ •This test report is not permitted to copy partly without our permission. •This test result is dependent on only equipment to be used. •This test result is based on a single evaluation of one sample of the above mentioned. •This test report must not be used to claim product endorsement by NVLAP or any agency of the U.S Government. • We certify that this test report has been based on the measurement standards that is traceable to the national or International standards. NVLAP Lab. Code: 200220-0 SK TECH CO., LTD. Page 2 of 39 SKT SKTTRT-050422-007 FCC ID: SE4HS920 >> CONTENTS << 1. GENERAL ············································································································· 4 2. TEST SITE ············································································································ 4 2.1 Location ········································································································· 4 2.2 List of Test and Measurement Instruments ···················································· 5 2.3 Test Date ········································································································ 5 2.4 Test Environment ··························································································· 5 3. DESCRIPTION OF THE EQUIPMENT UNDER TEST ········································· 6 3.1 Rating and Physical Characteristics ······························································ 6 3.2 Equipment Modifications ················································································ 6 3.3 Submitted Documents ···················································································· 6 4. MEASUREMENT CONDITIONS ··········································································· 7 4.1 Description of test configuration ···································································· 7 4.2 List of Peripherals ·························································································· 7 4.3 Uncertainty ····································································································· 7 5. TEST AND MEASUREMENTS ············································································· 8 5.1 ANTENNA REQUIREMENT ·········································································· 8 5.1.1 Regulation ······························································································· 8 5.1.2 Result ······································································································ 8 5.2 MAXIMUM PEAK OUTPUT POWER ···························································· 9 5.2.1 Regulation ······························································································· 9 5.2.2 Test Procedure ························································································ 9 5.2.3 Test Results ····························································································· 9 Table 1: Measured values of the Maximum Peak Output Power (Conducted) ····· 9 Figure 1: Plot of the Maximum Peak Output Power (Conducted) ······················10 5.3 CARRIER FREQUENCY SEPARATION ····················································· 12 5.3.1 Regulation ····························································································· 12 5.3.2 Test Procedure ······················································································ 12 5.3.3 Test Results ··························································································· 12 Table 2: Measured values of the Carrier Frequency Separation (Conducted) ···12 Figure 2: Plot of the Carrier Frequency Separation (Conducted) .....................13 5.4 20dB CHANNEL BANDWIDTH ·································································· 15 5.4.1 Regulation ····························································································· 15 5.4.2 Test Procedure ······················································································ 15 5.4.3 Test Results ··························································································· 15 Table 3: Measured values of the 20dB Channel Bandwidth (Conducted) ··········15 Figure 3: Plot of the 20dB Channel Bandwidth (Conducted) ···························16 SK TECH CO., LTD. Page 3 of 39 SKT SKTTRT-050422-007 FCC ID: SE4HS920 5.5 NUMBER OF HOPPING CHANNELS ························································ 18 5.5.1 Regulation ····························································································· 18 5.5.2 Test Procedure ······················································································ 18 5.5.3 Test Results ··························································································· 18 Table 4: Measured values of the Number of Hopping Channels (Conducted)·····18 Figure 4: Plot of the Number of Hopping Channels (Conducted) ·····················19 5.6 TIME OF OCCUP…

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SK TECH CO., LTD. Page 1 of 5 SKT SKTTRT-050422-007 FCC ID: SE4HS920 Test set up photos <Conducted RF power measurement> SK TECH CO., LTD. Page 2 of 5 SKT SKTTRT-050422-007 FCC ID: SE4HS920 <Radiated Emissions – Front View> SK TECH CO., LTD. Page 3 of 5 SKT SKTTRT-050422-007 FCC ID: SE4HS920 <Radiated Emissions – Rear View> SK TECH CO., LTD. Page 4 of 5 SKT SKTTRT-050422-007 FCC ID: SE4HS920 <Conducted Emissions – Front View> SK TECH CO., LTD. Page 5 of 5 SKT SKTTRT-050422-007 FCC ID: SE4HS920 <Conducted Emissions – Rear View>