Model Number: M17-11 Brand Name: OEM or Mctim Key Specifications/Special Features: Bluetooth Version: 4.1 VersionBluetooth Profile (such as A2DP, HSP, etc): A2DPBranding of chipset: BKOutput power & impedence (W & Ω): 4Ω 3W*2 ,Frequency response (Hz/KHz): 80Hz -20KHz

Sensitivity (dB): >80dB

Distortion degree of: >1%

NFC: No

TF card/SD card play features: NO

Voice guidance features: No

Microphone: YES

Handfree features: YES

Any other function & features: fashion design

Soft silicone button

Colourful metal grill

Battery type, capacity, voltage rechargeable Li-battery, 500mAh, 3.7V

Working time: 2 hours

Charging port type: micro USB

Materials: ABS, metal, silicone

Available color for selection plastic housing is black, aluminium shell is any color

Product dimensions: 180*40*78mm

Weight: 505g

Accessories (such as cable, IM, etc): Usb charging cable 60cm*1, audio cable 40cm*1

Certification (such as CE, ROHS, BQB, EMC, LVD etc): CE, RoHS, FCC, BQB(only Bluetooth moudle)