Model Number: TST-JF-001325 Brand Name: TST-JF Key Specifications/Special Features: Driver unit: 40mm speakerImpedance: 32Frequency response range: 20Hz to 20kHzSensitivity: 105dB (at 1kHz)Maximum input power: 50mW

Plug type: 3.5mm stereo

Cord length: 1.2m

Condition: brand-new, unused, unopened and undamaged in itsoriginal packaging

Fit design: headband

Earpiece design: ear-cup (over the ear)

Foldable, noise cancellation, playback controls, volumecontrol, shocking low-sound quality gives you a live concert-likesound effect

FM radio, TF card MP3 player, regular headset (via USB or audiocable)

Connectivity: wired (using USB cable make it same as regularheadset)

FM function: can listen FM radio

TF card slot: supports micro SD memory card, use as memory toplay MP3

Data transmission function: can copy music to play MP3(connected directly to a PC via a USB

Cable, when plug into micro SD card (also name TF card) as aU-disk directly copy songs)

Battery: built-in rechargeable lithium battery