Brand: Avantree. MPN: ROADTRIP. Bluetooth version: 5.0 • Supported prou001Fles: HFP HSP A2DP and AVRCP • FM frequency range: 88.1MHz~107.9MHz • FM transmitter range: up to 12ft • BT operation range: up to 30ft • Talk time: up to 12hrs (at 60% volume) • Music play time: up to 8hrs (at 60% volume) • Charging time: about 2hrs • Battery: 1020mAh BL-5C replaceable and rechargeable battery.