Three level brightness adjustment to protect your sleep,It acts as a small night light at night and a smart speaker for alarm clock during the day LCD LED display, clear and bright parameters Built in call environment noise reduction; 't worry about noisy environment or interference High frequency horn+low frequency horn+customized diaphragm The treble is bright and transparent, the midrange is clear and beautiful, and the bass is deep and quantitative Bluetooth 5.0 chip with fast and stable connection makes the connection more stable Product: Bluetooth speaker Functions: card insertion, call function Horn unit: 1 Connection: Bluetooth 5.0 Interface type: USB Frequency response range: 100HZ-20KHZ Output power: 10W Signal to noise : 85dB Power supply mode: built-in lithium battery Playback duration: 8 hours Effective distance: 10m Operation mode: key Shell material: plastic Supported : TF card Speaker adjustment mode: key Radio function: Yes Waterproof grade: non waterproof Built in battery capacity: 1200mAH Size: 128x64x41mm Colour:black Material:ABS Size:12.8 x 6.4 x 4.1cm Package Contents: 1 x Bluetooth Soundbar Speaker 1 x Charging 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.