Riversong Headphone 5.0 Wireless Black

Headphone Rhythm L EA33 Black
Specification of wireless
BLuetooth version 5.0
Support profiles: A2DP,AVCTP,AVDTP,AVRCP,HFP,SPP,SMP,ATT,GAP,GATT,RFCOmm,SDP,L2CAP
Operation distance: 10m
Transmitting power: Class 2
Frequency range: 2.402-2.480 GHz
Speaker: 40mm
Impedance:32
Sensitivity: 110dB+ / -3dB
TF card supported: 128M-32G
FM frequency response: 87.5-108MHz
Rechargeable lithium battery: 500mAh
Talking time : 10 hours
Music playing time : 10 hours
Charge time: 3 hours