Hoco BS58 Crystal Colorful Luminous BT Speaker Magic Black Night1. BT version: v5.1. Chip: JL AC6965E.2. Supported protocols: A2DP, AVRCP, HFP, HSP.3. Transmission distance: 10m.4. Transmission frequency: 2.4GHz.5. Speaker unit:1 48W 57mm speaker.1 low frequency diaphragm.Working power: 10W.6. Frequency response: 60Hz 20000Hz.7. Signal-to-noise ratio S/N: 85Db. Distortion THD: 5%.8. Battery capacity: 1800mAh (Class A 18650 battery).9. Charging input: Type-C 5V / 1A. Charging time: about 3 hours.10. Use time: 4-5 hours (70% volume, light off).11. Supports BT, TF card ( 32Gb), USB flash drive ( 32Gb), AUX, TWS and other modes.12. Transparent shell. Multi-function control panel. Multi-color lighting.13. Sizes: 142 142 181mm.14. Weight: 665g.