Wireless version: V5.3
Operating distance: 10 meters
Transmission power : Level 2
Frequency range: 2.402-2.480GHz
Impedance: 32 ohms
Supported TF cards: 128M-32G
RF range: 87.5-108MHz
Rechargeable lithium battery: 350mAh
Time Music playback: 6 hours
Talk time: 6 hours
Charging time: 2 hours
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