A9 pro Touch Screen ANC Original Wireless EarBuds

Model:A9 pro ANC fifth generation + smart screen “ANC+ dual-mark ENC+ in-ear detection light sense”
Color: white
1. Chip: Jerry 7003D8 noise reduction + light sensing in-ear detection
2. Version: 5.4 [binaural call]
3. Working frequency: 2.402-2.480GHz,
4. Support protocols: A2DP/AVRCP/HFP/HID/AVCTP/AVDTP, and SPP
5. Transmission distance: 15M [barrier-free]
6.Response frequency: 20～20000Hz
7.Speaker unit: ΦF13 titanium film, 32Ω±15%, 7.118±3DB 5mW
8.Microphone: 2718 silicon microphone -42±3dB
9.Charging input standard: contact, DC4.75-5.25 V/600MAH
10.Battery type: 3.7V polymer battery 500mAh with protection board (3C fast charging battery), headphone battery 30mah
11.Charging time: 1h
12.Headset working time: the measured 100% volume plays continuously for about 5.5 hours