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NOTE: We sale this headphone without retail box. If you want a retail box, please contact us.

Specofication

Bluetooth Version: V5.0

Frequency: 2.40 GHz-2.48 GHz

Power: ≤ 4 dBm, Class 2

Effective range: 10M

Sensitivity: 105db / 0.1% Ber

Frequency response: 20Hz-20kHz

Speaker size: 40mm

Support: A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5

Voltage: 3.7vdc (400 mAh rechargeable battery)

Talking time: 8 hour

Music time: 6 hour

Standby time: 148 hours

Charging time: 1.2 hours

Current: 20 mA

Operate temperature: -4 ~ 131 ° F (-20 ~ 55 ° C)