Main Features:
Bluetooth 4.0
● Adopt Bluetooth 4.0 technology， ?transmission distance is up to 10m
Built-in MIC
● Built-in microphone supports answering / reject / end / transfer calls， last number redial， voice-command dial (if your phone supports this function) and hands-free talking
Multipoint Connection
● It can be connected with two Bluetooth devices at the same time， so you can enjoy the wonderful music with your lovers or friends
NFC Function
● Make sure the operation system of your phone is above Android 4.11 and with NFC function
Five Functional Keys
● MFB (power on / power off / play / pause)， volume +， volume -， backward and forward buttons Color: Black，White
Wearing type: Ear Hook
Function: Microphone，NFC connection，Answering Phone，Song Switching，Voice control，Bluetooth Connectivity : Wireless
Connecting interface: Micro USB
Application: Mobile phone，Sport
Driver unit: 9mm
Frequency response: 18-20000Hz
Impedance: 32ohms±15 percent
Sensitivity: 110 dB
Microphone frequency: 20Hz - 20KHz
Microphone impedance : 32ohm / typ
Microphone dimension: 9mm (Diameter)
Input Power: 5V / 0.5 - 1.0A (Charger output)
Talk time: About 8 hours
Music Time: About 6 hours
Standby time: About 200 hours Bluetooth: Yes
Bluetooth Version: V4.0
Powlev: CLASS II
Bluetooth distance: W/O obstacles 10m
Bluetooth chip: CSR4.0
Bluetooth chip sensitivity: -90dBm
Bluetooth protocol: A2DP，AVRCP，HSP，HFP
Bluetooth mode: Hands free Product weight: 0.0160 kg
Package weight: 0.1000 kg
Package size (L x W x H): 10.00 x 11.00 x 4.00 cm / 3.94 x 4.33 x 1.57 inches Package Contents: 1 x AH03D Bluetooth 4.0 Earphone， 1 x USB Cable， 4 x Spare Earplug， 2 x Earphone Cover， 1 x English User Manual