The IQUA UFO Bluetooth Speaker has up to 10 hours of talk time and up to 450 hours of standby time with 32 of operating range. This Bluetooth speaker features a volume control and the last number redial function allowing you to easily dial up then number of the previous caller. This Bluetooth version 2.0 speaker is rechargeable and comes with a car charger. Can be mounted on to sun visor or dashboard of any car.