Model: BK3266
Bluetooth chipset：v4.2
Bluetooth distance: 10M
Speaker size: Φ10MM
Mic Sensitity: -42±3dB 1kHz/1mW
Speaker Sensitivity: 92±3dB
Support: HSP, HFP, A2DP, AVRCP
Resistance: 16 ohm ±15% 1kHz
Frequency: 20Hz～20KHz
Battery：140mah
Charging time: about 1.5H
Play time：10hrs
Talk time: 11-12hrs
Standby time: 300hrs
Standby time：120H
Weight: about 18g
Charging port: Micro
Size: 6251722mm
*Earbuds have magnetic function