• Wireless Version : 5. 0
• Transmit Range : ≤10m
• Transmitting Power : Class 2
• Frequency Range : 2.402-2.480 GHz
• TF Card Supported : 128M-32G
• Battery rechargeable polymer lithium-ion 90mAh
• Charge Time :1 Hour
• Operate Hours : about 4 hours (battery saturation)
• Talking Time : about 4 hours (battery saturation)