Suitable for picnic trips, party, family entertainment, singing. Compatible with most mobile phones and tablets. Can be used as a speaker, player, radio & recorder. This mike is compatible with various singing applications as well. – Bluetooth, aux (3.5mm jack), sd card, usb & radio mode can be used to play music. – Mike has an echo effect option – High-quality, noise reduction Speakers. Stunning live-sound, and clear music rhythm with echo reverberation. – Bluetooth wireless design for connecting to any bluetooth enabled smart devices. Distortion is less than 0.5 % Output Power: 5W Max Sound Pressure Level: >115Db 1KHZ TDH<1% Reverberation Mode: Sound effect reverberation Power Supply: Built-in 18650 Li-Battery Battery Capacity: 1800 MAH