•The built-in 3.7V/2000mAh battery takes 2.5 hours on a single charge and provides 14 hours of PTT time, 12 hours of music playback at maximum volume and 90 hours of standby time •When the Bluetooth-compatible microphone is connected to your radio, simply press the PTT button on the microphone to talk to your partner •Not only can it connect to your radio, but also to your iPhone/Android phone or tablet. When the Bluetooth-compatible microphone is connected to your phone, you can use it as a small Bluetooth-compatible speaker to play music or answer calls •The 2-pin microphone port is compatible with Motorola radios with a 2-pin headphone jack. Don't work for Kenwood, not for Pershing, not for Woolson, not for Baofeng, not for Midland Radio Specifications: •Material: PVC •Bluetooth-compatible version: 4.2 •Bluetooth-compatible protocol: HFP/HSP/A2DP/AVRCP/SPP •Transmission range: 10m •Transmission power: CLASS2.4dbm •Sensitivity: 80dBm