and high qualityBuilt-in TF/ micro SD card slot support up to 32GB TF card( card NOT included).Just save your loved songs in TF card and then for play them with this sport player.Supports MP3 WMA music format.Built-in rechargeable li-on battery and charge by USB cable.Easy to use, "On/ off" toggle and 3 Key-press: for Play/ Pause, Volume+/ -(long press)Specifications:Built-in FM radio functionMemory type: Flash memoryMusic Format: MP3 etcUSB version: USB2.0Signal to noise ratio: 95DbAudio Frequency: 20Hz-20KHZMemory: support TF card to 32GBContinuous working hours: about 8 hoursMaximum input voltage: 5V/for DC 500mACharged via USB portBuilt-in rechargeable lithium-ion batteryStorage Temperature: -20 C-80 CMaterial:ABS+PEDiameter:130mm/5.07'(approx)USB Cable length:45cm/17.55'(approx)Color:Black, White, Red, Blue, Green, PinkQuantity: 1 setNote:Transition: 1cm=10mm=0.39inchWith simple retail package.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank youPackage includes:1 x Sports Ear Hook Headphone1 x USB cable(other accessories demo in the picture is not included.)