Portronics Pure Sound Pro III POR-891, Bluetooth 4.2 an All-in-One Versatile Wireless SOUNDBAR with FM Tuner, 3.5mm AUX, Powerful 10W Sound and USB Port.

Power Output (RMS): 10 W and Bluetooth Version: 4.2
Power Source: Battery, 2500mAh, The powerful industry-leading size of 2500mAh lithium Ion battery can play music for more than 7 hours on a single recharge.
Battery life: 6 hr | Charging time: 2 hr
Wireless range: 10 m