1. Bluetooth version: V5.0 + EDR

2. Supported: HFP1.7, 1.2,A2DP1.3,AVRCP1.6, platinum, BDR/BLE

3. Bluetooth operating frequency: 2.402-2.480GHz

4. Receiving distance range:≤ 10 meters

5. Audio signal-to-noise ratio S/N:≥ 100dB

6. Battery: lithium Battery-3.7V, 50mAh

7. Microphone MIC: silicon microphone,-42dB ± 3DB,

8. Call/Play time: about 4-5 hours (the real usage time depends on the type and volume requirements of the song, 80% volume)

9. Charging time: earphone charging 1-1.5 hours, charging set 2 hours

Charging case parameters:

1: charging voltage: 5V/0.75A

2: charging port :USB

3: charging headphones: 15 times