SPECIFICATION
1 . Type:Waterproof Earphone
2. Cord:Specification .φ1.8[(8/0.08+250D)*3C]*1FPUL=1000±10mm
3. Connection plug:φ3.5mm “I”Type stereo plug with nikel-plated
CONFIDENCE TEST ：
1. Waterproof Test There should be no external appearance and action at water ：for 1.5 hours.
2. Low Temperature Test There should be no external appearance and actionat -10℃±2℃ for 2 hours.
3. High Temperature Test There should be no external appearance and action at +55 ℃ ±2℃ for 2 hours.
4. Humidity Test There should be no external appearance and action at +40℃:and relative humidity between 90%to95% for 48 hours .
5．Operating Temperature :5℃ to 40℃(41°F to 104°F)
6. Storage Temperature : -20℃ to 65℃ (-4°F to 149°F)
7. Load Test:There should be meet the buzzes & rattles test and distortion Test after loading 2mW of white noise for 96
8. Phase polarity :When“+”voltage “-” is applied to the“R”or“L” of the input plug and “-” voltage is applige end. The diaphragm must move forward.
ELECTRICAL CHARACTERISTIC
1. Driver Units : Ø10mm Mylar Speaker
2. Impedance :32ohm ±15% at 1kHz
3. Sensitivity :106dB±3dB at 1kHz
4. Fredquency Range : 20HZ—20kHz
5. Channel Balance : Less than 3dB at 1KHz
6. Rated Power : 2mW.
7. Maximum Power : 4mW.
8. Distortion:Less than 6% (2mW at 1KHz).
9 . Buzzes & Rattles : Must be normal at 50Hz---2KHz.
10. Insulation Resistance:Input DC 100V resistance over 2M ohms |
