MMCX connector. Can change the earbuds or cable with your other MMCX earphones, for sound quality comparing, or for different sound quality options, or for different color matching options.
Hanging around neck design, light weighted, comfortable feeling on neck. Two pieces of controller boxes, one is for bluetooth5.0 PCB board, the other one is for 110mA battery. All the control buttons is on the bluetooth PCB board controller box.
|1-1||Listening Music and Make Calling||Dual Dynamic Driver Wireless Sports Earphone|
|No.||Item||Specifications / Parameters||Remark|
|3-1||Bluetooth chip||Jian Rong 6691D V5.0|
|3-2||2.4G frequency range:||2.400- 2.480GHz；|
|3-4||Operating temperature:||-20- 40℃；|
|3-5||Earphone charging voltage:||5VDC；|
|3-6||Discharge operating voltage:||3.7VDC|
|3-8||Working current:||22mA||Test when playing 1kHz 0dB signal|
|3-9||Standby operating current:||14-16mA||Connection Current|
|3-11||2.4G Receiving sensitivity||-80dB＜0.1%BER|
|3-13||Degree of separation:||>40dB|
|3-16||Frequency hopping rate:||1600/S|
|3-19||R/L SPL tolerance||＜2 dB|
|3-20||Effective distance:||10m||Open Space|
|3-21||Continuous talk time:||More than 6 hours||70% volume test|
|3-22||Music playing time:||More than 6 hours||70% volume test|
|3-26||Micro Speaker Driver||Φ6mm Composite Diaphragm Dynamic|
|3-27||Speaker Driver Size||Φ6mm|
|3-28||MIC sensitivity||-42dB +/-3|
|3-29||Charging Port：interface:||Micro USB|
|4-1||Vibration experiment||In the vibration tester, apply the specified vibration force in each direction for 2 hours
After that, the function and structure are completely normal. Vibration: 10-55Hz, amplitude: 1.5 mm, time: 2 hours.
|4-2||Noise tolerance experiment||After entering the maximum allowable noise of 24h, it is still normal.|
|4-3||High temperature and high humidity preservation experiment||With the relative humidity of 45+2 is 95%, the environment is kept for 96 hours, and then stored for 24 hours at room temperature and under constant humidity, there is no problem in appearance and sound quality.|
|4-4||Plug Testing||Put the plug into the socket vertically and hold the plug for 30 seconds with a 10 N (1kg) force. Use this weight in four directions: top, bottom, left and right. There is no bad contact in the socket.|
|4-5||Cryopreservation Testing||After 96 hours of storage at -25 ±2 ℃ and then 24 hours at room temperature, there were no problems in appearance and sound quality.|
|4-6||High temperature preservation experiment||Save 96 hours and then place 24 hours under normal temperature and humidity without any problems with appearance and sound quality.
The maximum signal input at 60 ±2 ℃ will not cause any problems.
|4-7||Temperature cycle experiment||It was stored at -40 ℃ for 0.5 hours, then at 70 ℃ for 0.5 hours, and then for 20 cycles, and then kept for 24 hours at normal temperature and humidity. There were no problems in appearance and sound quality.
At the temperature of -40 ℃ ~ 60 ℃, there is no problem when the signal input is maximum.
|4-8||Drop test||Fix a rigid board horizontally, drop it on board in a natural way at a height of 1m, drop three times, wire rod should be the same as when packing shipment. Test results: no problem with sound quality. No appearance damage, due to cyclic test surface marks or indentation can not be regarded as defective or undesirable.|
|4-9||Cable hoisting experiment||The wire increased 0.5 KG and lasted for 1 minute without abnormality.|
|4-10||Cable-swaying experiment||The weight bearing is 100 g, the pendulum is 120 degrees / min, and the swing is 2000 times.|
|4-11||Plug Insert and Extract test||Plug insert and extract for 3000 circles, quality is ok|
|2||USB charging wire||Charging cable 30cm length|
For more details, please refer to the user manual: