This speaker, with a 20W high-power design, paired with 360° surround sound, brings a cinema-level sound quality experience. 4400mAh large battery, can play continuously for 20 hours, colorful light effects add to the audio-visual enjoyment. BT 5.2 connection, stable without lag. Features: High-fidelity sound quality: Using a 66mm full-range speaker and dual bass diaphragm, the distortion is less than 1%, restoring the real sound quality. Strong bass: The unique bass cannon design, paired with a semi-transparent large diaphragm, brings strong and pure bass performance. Surround stereo: Can create a thicker, multi-dimensional, more spatial stereo, enhancing auditory enjoyment. Colorful light effects: 16.8 million RGB pixel colorful lights, changing with the rhythm of the music, adding audio-visual fun. BT 5.2 connection: Compatible with various smart devices, fast connection speed, low power consumption, stable within 10m. Specifications: Colour: Black/blue/camouflage(Optional) Transmission range: 10m Charging voltage: DC 5V Frequency response: 80Hz-20kHz Working voltage: 3.7V BT version: 5.2 Battery capacity: 4400mAh Speaker power: 20W Signal to noise ratio: ≥85dB Distortion: < 1% Size: 9.8x9.8x16.3cm / 3.9x3.9x6.4in Weight: 670g / 1.5lbs Package list: 1*Speaker 1*Type-C charging cable 1*Lanyard 1*Manual