Riin Clip Mp3 Player with Tf Slot (Black) Condition : 100% Brand New, never used Capacity : No built-in memory. With Micro-SD / TF card slot. TF card isn't included in this listing and need work with your TF (Micro SD) card(Support 128M, 256M, 512M, 1GB, 2GB, 4GB, 8G) Special Functions :  Player Music;  Also can use as TF Card Reader Format supported : MP3 audio format.etc Battery : Built-in rechargeable Li-ion battery, directly connect with PC via USB cable for re-charging