[Bluetooth 5.0] Bluetooth adopts the most advanced Bluetooth 5.0 technology, which can provide a more stable connection (connection distance up to 40 feet), faster pairing speed (only 2 seconds) and universal compatibility. [High-fidelity sound] The wireless with 13 mm diaphragm and high-definition rendering technology produces sound quality and crystal clear treble. Enjoy karaoke singing or sound anytime, anywhere. [3000mah built-in rechargeable battery] Portable Bluetooth can get 7-8 hours of playing time (only 1 hour of charging time) with a single charge. Whether or outdoors, don' worry about running out of batteries. [Support duet and reverb function] A device such as a smart phone can be paired with 2 microphones at the same time. Support or accompaniment singing. Compatible with , , PC, TV, etc. Play from the karaoke speaker via Bluetooth, TF card, and auxiliary cable. Advanced noise reduction technology will high-quality, crystal-clear sound. [Moveable and the best gift] Ergonomic design and comfortable grip handle, with comfort and seamless sound, it fits your ears effortlessly. This wireless is also the for birthday, Christmas or New Year gift lists. colour: black Material: plastic + metal Package Contents: 1 x 1 x USB Cable 1 x Audio Cable 1 x English Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.