1. Portable karaoke speakers make the sound better and the multiple sound processing technology is better 2. High-fidelity sound effects and singing experience 3. Powerful battery life allows you to sing from morning till night 4. TF card audio source playback is plug-and-play 5. Powerful, stable and high compatibility, can be used on mobile phones and tablets Bluetooth version:5.0 Battery capacity: 3.7V1000mAh (speaker) 500mAh (microphone) Speaker:52MM425W Effective distance: 10M Playing time: speaker 2~4H, microphone 2~4 Charging time: speaker 2~3H, microphone 2~3 Frequency range: 60Hz-20KHz Function: Bluetooth, TF card playback, call mode Voice change: KT, voice, male voice, female voice, baby voice, voice Input/output:DC5V-1A Colour:Yellow Material:ABS Size: Microphone: 4 x 4 x 12.3cm; Speaker: 11.5 x 6 x 7.5cm Package Contents: 1 x Instructions in Chinese and English 1 x Type-c charging cable 1 x Speaker 1 x Microphone 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.