Cyboris IPX7 Waterproof Mini TWS Interconnected Water Floating Bluetooth Speaker Features: 1. HIFI high fidelity, high volume without distortion, clear and natural sound 2. Bluetooth 5.0, stable wireless connection, high-definition two-way call 3. Waterproof speaker, closed box, IPX7 waterproof, can actively float on the water 4. Compact and lightweight design, easy to carry 5. Support 64GB memory card and lossless audio playback 6. 3D surround sound field, TWS dual-machine interconnection Product parameters: 1. Bluetooth version: 5.0 2. Transmission distance: 30 meters (barrier-free transmission) 3. Power input: Micro 5V1A 4. Speaker unit: 4 ohms 5W53mm 5. Frequency range: 30HZ-18KHz 6. Signal-to-noise ratio: 85dB 7. Battery capacity: 3.7V900mAh 8. Charging time: about 2.5H 9. Battery life: 4-10H 10. Waterproof grade: IPX7 11. Product size: about 100 x 100 x 47mcm 12. Product net weight: about 240g 13. This product is measured manually, and there may be an error of 0.1-0.2mm and 0.1-0.2g in length and weight; there may be a slight color difference due to display and light problems. Please refer to the actual product 14. Note: The delivery only includes the speaker, not other items in the picture