HC25 Radiant, wireless speaker, BT v5.2, with 4000mAh battery, 3 hours of work, supports BT, FM, TF, USB, AUX, TWS playback modes, supports calls 1. BT version: v5.2. Chip: Zhongke Lanxun AB5606P. 2. Supported protocols: A2DP, AVRCP, HFP. 3. Transmission distance: 10m. 4. Transmission frequency: 2.4GHz. 5. Speaker unit: 2 × 4Ω10W 52mm full frequency speaker. 2 × low frequency diaphragm. Maximum output power: 20W. 6. Frequency response: 120Hz – 20000Hz. 7. Signal-to-noise ratio S/N: ≥ 85Db. Distortion THD: ≤ 5%. 8. Battery capacity: 4000mAh (Class A 18650 battery). 9. Charging input: DC 5V. Charging time: about 6 hours. 10. Use time: 3 hours (80% volume). 11. Supports BT, FM, TF card (≤ 32Gb), USB flash drive (≤ 32Gb), AUX, TWS and other modes. Supports calls. 12. Oval light bar on side, adjustment of a variety of cool lighting effects. 13. Multi-function control panel. 15. IPX4 waterproof. 16. Fabric shell. With lanyard. 17. Sizes: 202 × 123 × 86mm. 18. Weight: 1.2kg.