Product Name:  tws bluetooth earphone
Bluetooth version:  V4.2
 Chip:Airoha 1526
Supports last call number redialing
Freq. Range: 2.402GHz-2.480GHz. 
Support Profile: HSP,HFP,A2DP
Working  Distance :10-15M
Frequency response:20Hz-20KHz 
Transmitting Power: Second 0dBm.(Max 4dBm) 
RF output power:-6dBm-4dBm 
RF Sensitivity: 0.1%BER at -80 dbm
Impedance :3.7V 
Headphone battery capacity: 50 mAh
Storage box battery capacity: 1000 mAh
 
MP3 Music listening time :about 2 hours 
Talk time: About 2hours 
Standby time:  50 hours
Charger time:30 minutes
Operating Current:40 mA 
Operating temperature:-10°C to +55°C

Quantity per box: 100pcs / box
Headphone Weight: 5G / pc
Headphone Size: 22 * 23mm
Charging box size: 60 * 65mm
Color box size: 95 * 165 * 50mm
Net weight: 21Kg
Gross Weight: 22.5 Kg
Carton Size: 46 * 30 * 46.5CM

Patent number: ZL201630556386.4
The main selling point:
1. Master aesthetics design, comfortable to wear
  2 Touch the button and do not touch the ear when pressing
3. fit the human ear
4. Small size, light weight, movement
5. True wireless surround sound
6. good sound quality, bass strong low power consumption
  7.-94dB receiver sensitivity, the received signal is good
8. Optional internal memory card
9. Storage box can be charged to peripheral products
  10. Bluetooth power display (need to support mobile phone)
  11. Taiwan 3S silicon wheat, millet headset with the microphone

State of Art Headphone Design, Virtually  wireless, Set yourself free from all cables, enjoy your favorite music under most  relaxing conditions while workout, running, walking and more.
*Featuring latest Noise Cancelling technology, Maximize Noise reduction, Two power  Audio driver delivery crystal clear sounds and deep bass.
*Ergonomic Design for most comfortable wear; Ultra lightweight, less than 0.15oz,  providing most comfortable listening experience.
*half hours battery life Due to it's size( One of the smallest on the Market) , Comes  with 2000mAh wireless charging Box able to charge it up to 20 times.
*Compatible with Most of the Bluetooth enabled devices, work with your iPhone, iPad,  MacBook, Android Smartphones, tablets, chrome Books, Windows Laptops, desktops,  Bluetooth Speakers and more.
*Support multi-point connection, can connect two Bluetooth devices at the same time.