Shenzhen A7 Hearing Enhancement Wireless Stereo Earphones User Manual
Shenzhen A7 Hearing Enhancement Wireless Stereo Earphones Product specification Bluetooth version: 5.3 Battery input: DC 5V Earphone battery: 40mAH Charge case battery: 380mAH Working time: about 6-7 hours Working current: < 7mA Maximum OSPL90: <116dB‡ 3dB EQ Input Noise: <15…