wireless smart intelligence bluetooth 5.0 handsfree kit with mp3 player functions t1

Bluetooth version v5.0         
Bluetooth name km Fran         
Frequency 2.402-2.480ghz         
The transmission distance is about 15m         
Play music for 3-4 hours         
Talk time 4-5 hours         
Charging time 2-3 hours         
Battery lithium polymer 110mA
Unit weight: 41g     
Full set weight: 141g     
Single machine size: 14.8 * 15.7 * 0.3cm     
Package size: 5.5 * 7.5 * 18cm     
Each box: 64ps (16 * 4)     
Outer box size: 50 * 40 * 37cm     
Weight of each box: 9.9 kg