Fangrui Product Details Bluetooth 5.1: Built-in V5.1 Core Chip, Stable Transmission, Longer Connection Distance, Get Rid Of Wired Constraints, Enjoy Wireless Music. Colorful Atmosphere Lighting: Light Button Switch, Full Of Atmosphere, Double Visual And Auditory Enjoyment. Fully Enclosed Transparent Speaker: Adopting A Fully Enclosed Transparent Sound Cavity Design, While Ensuring The Light Effect Of The Speaker, It Also Greatly Improves The Bass Effect Of The Speaker. Hd Speaker Unit: Built-in Full-range Internal Magnetic Speaker, Hifi Shocking Sound Effect. Large Capacity Endurance: 800mah Large Capacity Battery, Charging Time Is About 4 Hours Multi-mode Use:support Bluetooth/tf Card, Enjoy Music Anytime, Anywhere. Free Your Hands:answer Mobile Phone Calls With One Click, Easy Hands-free Calls, Crisp And Clear Sound. Rated Voltage: Dc 5v+0.5/2a Power Mode: Usb-tp-c Nominal Power: 2x3w Built-in Battery: 3.7v/800mah Battery Capacity: 800mah Frequency Response Range: 120hz-18khz Speaker: 4 Ohm 5w Signal-to-noise Ratio: 85db Bat