The KLINE wireless bone conduction headphones are a Transformers‑themed audio device featuring bone‑conduction speakers and a rechargeable 3.7 V/200 mAh battery. The manual explains how to power the headphones, adjust volume, use the multifunction button, and pair with Bluetooth devices.
It also covers charging procedures, LED indicator meanings, wearing methods, technical specifications, safety warnings, fault diagnosis, and warranty information for the product.
| Speaker type | Bone conduction technology speaker |
|---|---|
| Play time | Up to 6 hours |
| Charging time | 2 hours |
| Standby time | Up to 10 days |
| Effective range | 10 meters (33 feet) |
| Battery capacity | 3.7 V/200 mAh |