• Advanced Bluetooth 4.0 -- Fast paired, quick response within 33ft,, fluent signal trasmission wirelessly for music playing, phone pick-up. You can connects to Echo Dot through Bluetooth or 3.5 mm stereo cable to play music.

• 20W Strong Bass -- Built with dual 10W 45mm 4ohm drivers and central bass radiator, 80db max volume, quality compares favorable with home audio system.

• Up to 10h Music Playing -- High capacity 4,000mAh battery allows 7-10 hours music playing after 3-4 hours charging, long lasting enough to entertain you for party, camping, boating, hiking and more outdoor activities.

• Superior Casing Design -- After reviewing tens of wireless speakers, we've spent half an year working out this mould, which is far more outstanding beyond most others.

• 18-Month Warranty -- Otium offers 30-day free money back, 18-month warranty and lifetime dedicated support to assure you long term enjoyment.

Quality Sound Materials, perfect quality enjoy!

18-core aluminum alloy speaker+Composite membrane +Drive permanent magnet+TPE sound vibrating film, meticulous and crafted. Design philosophy is basic of the pursuit of perfect sound quality.

Balanced Frequency

Balanced frequency 160Hz-20kHz, response with enhanced. Passive bass diaphragm, offering perfect sound performance.