Features:  -LED light modes: the colorful lights will move according to the rhythm and rhythm of the music, adding a bunch of colorful notes to the music.  -Support hands-free call function, built-in noise-cancelling microphone, so that mobile phone calls have an extremely smooth call enjoyment.  -New generation 5.0 Bluetooth chip technology, low energy consumption, strong stable signal, fast pairing, fast switching and so on.  -HIFI sound quality: full-range loud speaker design, no broken sound, no hiss. Natural and balanced bass output, low frequency mellow.    Specification:   Bluetooth version: V5.0;  Output Power: 10W;  Wireless transmission range: 10m;  Audio noise ratio: ≥85db;  Battery capacity: 3000 mAh;  Standby Time: ≥90 days;  Using Time: 6-10 hours;  Charging time: 3.5 hours;  Frequency response: 100Hz-20kHz;  Working Voltage: 3.7V;  Charging Voltage: DC5V;  Product size: 103*103*170mm;    Packaging:   1 * Bluetooth Speaker (Note: without microphone);  1 * Lanyard;  1 * Charging Cable;  1 * User Manual