TW2S IPX5 Waterproof Noise Reduction Helmet Bluetooth Headset Features: 1. High-definition 360-degree ACS surround drive system, more pleasant sound 2. Double-click to wake up the AI ??voice assistant, avoid manual operation during riding, and escort your safety 3. Support connecting two mobile phones at the same time 4. The sponge passively reduces environmental noise, presenting pure sound quality and clearer voice calls 5. Using Bluetooth 5.3 technology, lower power consumption, stable connection, low latency, and more stable signal 6. Compatible with a variety of helmets Product parameters: 1. Material: PC+ABS 2. Chip: AB5616+HT4822 3. Bluetooth version: 5.3 4. Bluetooth protocol: A2DP, HFP, HSP, AVRCP 5. Speaker specifications: 30mm high-quality speakers 6. Decoding format: AAC, SBC 7. Noise reduction type: sponge passive noise reduction 8. One-to-two devices: support 9. Charging interface: Type-CUSB-C 10. Battery capacity: 3.7V500mAh Polymer lithium ion 11. Charging time: 1.5 hours 12. Talk time: 45 hours 13. Standby time: 80 hours 14. Waterproof performance: IPX5 15. Prompt tone type: English 16. Weight: about 52g (excluding accessories) 17. This product is manually measured, and there may be errors 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! Packing list: -Bluetooth headset x 1 -Adhesive stickers x 2 -Charging cable x 1 -Instruction manual x 1