Model: UM1501B Main Material: ABS Product Dimension: Ø205 x L340mm Power: Max 40W Power Supply: 6 x Type D or 7.4V Lithium Battery Battery Life: Normal use to up 8 hours Reach: Outdoor up to 800m Function: Talk, Siren, Recording, Volume Adjust Recording Time: 200 seconds Extra Input: 1x full speed USB 2.0 OTG controller, 1x TF card host controller Support Format: MP3, WMA, WAV Bluetooth: V5.0 compatible