Wireless Invisible stereo earphone headphone 

Specifications:

• Bluetooth version 3.0+ EDR, class II
• Supports Bluetooth HSP, HFP, A2DP profiles
• Chipset:CSR Weight: 8.7 g
• Charging time: 2 hours
• Talk time: 4.0 hours
• Standby time: 120 hours
• Dimensions (L x W x T):   57*16.2*8.5 mm
• Colors: Black/White
• Bluetooth frequency range: 2.4 to 2.480GHz

*Charger Power: Input 100-240 V AC, Output: 5V DC

*Standard Layout: 1*Bluetooth headset+1*Charger+1*Ear hook+1*Product manual

Some tips for you for maintainance:

This is a unique, technology advanced product; please keep it by your au

. Put it in the place out of the reach of the child.

2. Keep it dry. Circuitry will be corroded by rain, humidity and all types of liquids or moisture. Please dry the headset thoroughly if it has been wet.

3. Do not put the headset in the place that is dusty. Otherwise the moving parts and electronic components would be damaged.

4. Do not place headphones in hot or cold place, as high temperatures can shorten the life of electronic devices, damage batteries, and distort, melt some plastic parts; low temperatures can cause damage to the circuit board

5. Do not drop, knock, or shake the device. Rough handling can break internal circuit boards and fine mechanics.

6. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the headset.
7. Do not apply this headset. Coatings may hinder the activities and impact of moving parts the normal operation of the headset

Above recommendations are applicable to this product headphone, battery, charger and other accessories. If the headset does not work, connect the headset to the nearest authorized service facility for repair.