Ultimate Ears Boom 2 Portable Waterproof & Shockproof Bluetooth Speaker (Red)

Maximum Sound Level: 90dBA

Frequency Range: 90Hz – 20kHz

Drivers:

two 45mm (1 3/4″) active drivers and two 45mm X 80mm (1 3/4″ x 3″) passive radiators

Rechargeable Lithium-Ion

up to 15 hours of battery life

Charge Time:

2.5 Hours

Pair up to 8 Bluetooth enabled devices.

Connect up to two source devices at the same time.

Mobile range of play is up to 33m.

Smartphones, tablets, and other devices that support Bluetooth wireless audio profile.

3.5 mm audio output