product description:
1. Bluetooth version: V3.0
2. working distance:10meters
3, standby time:about 120hours
4,playing music4-6hours
5,taking time 8-10hours
6. charging time 2-3hours
7.operating voltage 3.7V
8.battery :similar lithium battery
9.speaker diameter:40mm
10.impedance:32Ω
11.support TF card:2-16G
12.support FM MP3
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