Specification:

Size	140*110*50mm
Weight	32G
Color	black / white
Waterproof rating	IP66
Main chip	CSR
Working frequency band	ISM band (2.402-2.480GHZ)
Transmit power	Class 2 (-6dbm-4dbm)
Maximum output power	8mW
Rated output power	5mW
Bluetooth antenna	built-in ceramic antenna
Working distance	8-10 meters
Physical button	3 (ON/OFF volume +-)
Bluetooth	BT4.1
Microphone	SMD silicon wheat -42dB ±3dB
Speaker	bone conduction horn
Sensitivity	88+/-3dB
Frequency response range	80HZ~20KHZ
Battery	200mAh rechargeable polymer lithium battery
Play time	6-8 hours
Standby time	20 days
Charging time	1.5~2 hours
Charging voltage	DC 5V 500mAh
Charging method	magnetic charging cable

Features:
- Subwoofer and vocals, switch at will. Press the volume up and down button for three seconds at the same time.
- Magnetic charging for durability. The adsorption interface is easy to remove and fast and safe.
- No need to enter the ear. Bone conduction tone. Don't put it in your ears. No ears, comfortable and safe.
- 2 hours fast charge, lasting battery life. In the state where no music is played and Bluetooth is not connected, it will automatically shut down in about 5 minutes. Listen to the song for 6 hours and stand by for 10 days.
-CSR4.1 high protocol version, low loss, more stable transmission and enhanced compatibility.
- Ergonomic design, the bend will not be damaged.
- One button operation, simple and fast.
- Bone conduction Bluetooth stereo sports headphones. 100% pure bone conduction technology, sound transmission is more direct, safer, less external appearance.
- IP66 waterproof. All-round waterproof function, can be washed and cleaned.

Package Content:
1 x E3 Bone Conduction Headset
1 x User manual
1 x Charging cable
1 x Earplug
1 x Portable small bag

Note:
1. Please allow 0.5-1 cm differences due to manual measurement.
2. Due to the light and screen difference, the item's color may be slightly different from the pictures.