Product description- Excellent sound quality and strong bass, use Bluetooth or AUX connection, 2- Smart TF/SD card design, support Rechargeable FM local streaming playback, with Micro SD card slot, you can play music on a micro SD card easily. Play music to support your microSD card up to 32GB (Micro SD card not included), 3 soft PU leather headpads and ear pad for wearing comfort. Perfect Noise Insulation 4 Built-in Microphone, Walk and Talk, Hands-Free Calls 5 – Support Audio Input (AUX) Function for Smartphone/Computer/MP3MP4 6 Players – Universal Compatible with All Bluetooth, Tablets, Smartphones etc. Specifications S O D O Model S D-1002 Bluetooth V5.0 Plus B R Plus E D R Resistor 32 Ohm Motor Size 40mm Frequency Response 20-18KHz Working Voltage D C 3.7V Battery Capacity 250m Amp Input Power D C5 V 500 Amp Charging Time 2-3 Hours Music Time Up to 6 Hours Talk Time 8 Hours Distance Effective 1 Meter Package Includes 1 x Bluetooth Headset 1 x Charging Cable Compatible with Cell Phones