Oneday OE20 TWS Blue tooth Ear phone

1.Bluetooth version V5.3
2.Bluetooth Solution JL 6983D2
3.Audio Encoding Protocol SBC
4.Effective range ≥ 10 meters
5.Earphone battery specification 30mAh protective board
6.Earphone charging time ≈ 1.5 hours
7.Charging box charging standard DC 5V1A
8.Charge the earphones 3 times
9.Speaker size Ø 13mm
10.Speaker impedance 32 Ω± 15%
11.Frequency response range 20Hz~20KHz
12.Weight (single earphone) ≈ 3.64g
13.Weight (complete set) ≈ 37.6g
14.Supports Bluetooth protocols HFP, A2DP, AVRCP
15.Signal power level Class 2
16.Working frequency 2.4G Hz
17.Earphone charging voltage DC 5V ± 0.2V
18.Charging case battery specification 300mAh protective board
19.Charging time for charging case ≈ 1.5 hours
20.Connection standby time ≈ 40H
21.Accumulated battery life of approximately 17H
22.Speaker sensitivity 113 ± 3dB
23.Charging case size 62.8 * 45.5 * 26.7mm
24.Single headphone size 31.5 * 22.7 * 22.3mm