Shenzhen RF Technology Co Ltd

 Product Des:   TWS Earbuds  Chipset:QCC3020 / ats3009   Bluetooth Version:V5.0 ± EDR,BLE  BT protocol: EDR+HFP+HSP+A2DP+AVRCP  Decoding:SBC,AAC  Transmission distance: 10M      Mic Type:   MEMS silicon Mic  Mic Qty: one(each earbud)  Sensitivity: 42dB± 3dB(0dB=1V/P a@1KHz)  SNR: 60dB  THD: less than 1% 94dB SPL @1kHz  Impedance: 100Ω       Battery Charging   port: Micro USB  Voltage: 3.7V  Current: 500mAh for charging box,100mAh for   earbuds  Charging time: charging box   2hrs,earbuds1.5hrs  Battery capacity:  Charging box 500mAh+ earbuds 50mAh *2  On call lasts 3 hrs,music playing for   5.5hrs,200 hrs standby      Speaker Type: Dynamic composite film   speaker   Driver: Φ13mm ,N40 magnet  Sensitivity:1KHZ 103±3dB @1KHz,126mV  Impedance: 16Ω   Frequency response: 20Hz-20KHz  Rated power: 3mW      Earcap Waterproof level:   IPX4  NW: TBD  Earbuds size: 37.8*17.9*19.8mm  Charging box size: TBD (HWD)  Working condition: Temperature -15ºC -60ºC,Humidity   10%-85%