*Bluetooth version: BT5.0 
*Certification: CE/ROHS
*Battery capacity: 170mAh 
*Music playback: 15 hours (normal volume) 
*Horn diameter: 14mm 
*Speaker impedance: 32 ω ±15% 
*Frequency response range: 80HZ-20000 HZ
*Charging interface: Mirco-USB 
*Product features: call, music playback technology: material 
*Material: ABS Standard: GB8898-2011 
*Weight:25g