ANKER Soundcore Space Q45 Headband Wireless Bluetooth Headset 1. Battery capacity: 750mAh 2. Input: 5V 0.7A 3. Use time: about 50-65H 4. Interface: Type-C 5. Bluetooth version: 5.3 6. Packing list: headphones, manual, audio cable, charging cable 7. Size: about 18.9 x 16.1 x 8.8cm 8. Weight: about 292g Features: 1. 40mm silk composite diaphragm, shaping the surging thick low-frequency, metal ceramic diaphragm, restore the crisp and bright mid-high frequency 2. High-resolution delicate acoustic sound, non-destructive sound quality 3. Triple dynamic noise filtering system, isolate the full range of noise, noise reduction is cleaner, deeper and smarter. 4. Based on the environment, dynamically adjust and match the best noise reduction mode 5. Built-in dual microphone, through the AI call noise reduction algorithm, accurately recognizes and picks up the human voice, and filters part of the wind noise to ensure clear calls 6. Bluetooth 5.3 technology, worry-free listening, listen to the sound without dropping the line 7. Multiple pass-through modes, no need to manually switch between multiple connections, more convenient to listen to the audio 8. Matte mirror surface, single-axis design, simple and smart 9. Non-marking telescopic headband, adapting to different head shapes 10. Large inner diameter earmuffs, soft and pressure free 11. Equipped with 3.5mm audio interface, wireless and wired can be heard 12. Foldable design, easy to store and carry