Advantages of the Bone Conduction System!
1. Light-weight and small size
2. Delivery of exact source of sound to the user
3. Dynamic tone and sound quality
4. Economic low-power consumption
5. Durable against external shock and breakdown
6. Protects tympanic from damage.
7. Sound is not audible to the others
| BH905M | BH905B | BH905MB | |
| Function | MP3 | BT | MP3 and BT |
| Waterproof | ip68 | ip68 | ip68 |
| Memory | 8GB | N/A | 8GB |
| UsB Connection | USD2.0 | USD2.0 | USD2.0 |
| Battery | polymer lithium Battery | polymer lithium Battery | polymer lithium Battery |
| Charge Time | 4 hours | 4 hours | 4 hours |
| Working time | 3-4.5hours | 3-4.5hours | 3-4.5hours |
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