****************************************Double earphone:
<br />4 Colors: Black, White, Silver, Gold
<br />Item: Wireless Earphones
<br />Gender: Unisex
<br />Wire Type: Wireless
<br />Bluetooth Version: 4.1
<br />Mode: In Ear
<br />Sound Channel: Stereo
<br />Plug: USB
<br />Chargable: Yes
<br />Earphone Overall Length: 58.7cm/23.11inch
<br />USB Cable Overall Length: 27.6cm/10.86inch
<br />Clip Size: 3.3 x 1.3cm/1.29 x 0.51inch (L x W)
<br />Function: Support Music, Answer a Call, End a Call, etc.
<br />Support for: iPhone 7, Oppo, Samsung, etc.
<br />Occasion: Casual, Work, Sport, Travel, etc.
<br />Quantity: 1 Set
<br />Easy to charge and store.
<br />Package Contents:
<br />1 x Pair Wireless Earphones
<br />
<br />*************************************************right earphone:
<br />1. Drive: 15mm
<br />2. Impedance: OHM
<br />3. Bluetooth version: Bluetooth v4.1+edr
<br />4. Bluetooth Use frequency band: 2.4GHz
<br />5. Power level: CLASS II
<br />6. Output power: 30mW
<br />7. Bluetooth Distance: Barrier-free 10 meters
<br />8. Frequency response: 20-20000hz
<br />9. Operating voltage range: 3.0v-4.2V
<br />$number  Microphone Head Sensitivity: -42db
<br />11. With A2DP/AVRCP high quality stereo audio transmission and Remote control protocol
<br />12. Powerful noise elimination circuit (active reducing noise)
<br />13. Switching between English and Chinese (not connected with Bluetooth status, press switch 2 times, to hear the prompt sound switch success)
<br />14. Charging time of about 1 hours (Power indicator charge: red light, full power: red light off (blue light).  
<br />15. Product Size: 10*10*3.5
<br />17. Call TIME about 4-5 hours
<br />18 Music Time about 4-5 hours
<br />19. Standby time is about 120 hours
<br />20. Charging time is about 60 minutes
<br />21. Battery Capacity 60MAH
<br />22. Charging power: dc5v Power &quot;round Hole Interface&quot; (Computer USB port, mobile charger, car charge)
<br />23. Compatible Mobile phone: Compatible with Android, Apple, Microsoft, Symbian system 99% with Bluetooth-enabled mobile phone