Zealot S49 Outdoor Portable Wireless Bluetooth Speaker with RGB Light Parameters: 1. Bluetooth version: 5.2 2. Transmission distance: about 10m 3. Playing time: about 3-5H 4. Charging time: about 3H 5. Signal-to-noise ratio: greater than or equal to 85dB 6. Working voltage: 3.7V 7. Frequency response: 20Hz-20KHz 8. Battery capacity: 4000mAh 9. Speaker: 57mmx2 10. Distortion: less than 1% 11. Function: Bluetooth TF card U disk Internet AUX 12. Size: 85x88x141mm 13. Weight: 530g Features: 1. Bluetooth: Stream music wirelessly from your smartphone, tablet, or any other Bluetooth-enabled device without interference. 2. Waterproof: The speaker has a built-in waterproof TPU membrane, which is designed to prevent water from entering your device. 3. Loud sound: The sound of this bluetooth speaker is very loud and can be heard through various speakers. 4. Easy to carry: The portable speaker is easy to carry and store. Lanyard design, you can put it on your backpack, handbag or bike. Parts List: - Bluetooth speaker x 1 - Power cord x 1 - Audio cable x 1 - Lanyard x 1 - User Manual x 1 - Box x 1