1. Adopting the latest Bluetooth chip v5.3, more compatible and energy-saving; 2. Ultra portable design, designed for gatherings and camping; 3. Dual wireless karaoke, enjoying a ktv like karaoke experience; 4. 4 inch large high-power speakers bring immersive music enjoyment; 5. Accompaniment and reverb dual volume display, making control easier Product model: S882 Bluetooth version: 5.3 Speaker battery capacity: 3.7V/3000mAh (dual MOS) Microphone battery capacity: 3.7V/600 mAh (single MOS) Horn: 105mm, 3 Ω 2 Power: 100W Effective distance: 10 meters Playback duration: Speaker equal 8-10H, Microphone 2-4H Charging time: Speaker equal 2-3H, Microphone equal 2-3H Response frequency range: 60 Hz -20 kHz Main functions: Bluetooth, TF card/disc playback, call mode, KTV Change of voice: original voice, male voice, female voice, doll voice, magic voice Input/output: DC 5V-1A Product size: Bare metal size (mm): 168 x139 x171 Weight: 1.39KG Colour:black Material:plastic Package Contents: 1 * Bluetooth Speaker 1 * Type-c Cable 2 * Microphones 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.