Brand new high quality Micro SD card reader! USB 2.0 interface, backward compatible with USB 1.1 Plug and play Easy to use, fast reading and writing Powered via USB, no need extra power supply Plug-in design, with lanyard Compatible with Micro SD card Weight: 4.3 g Dimensions: 32.5 X 15.5 X 7.5 mm 5-year guarantee! 100% new! Plug and play Compatible with SD card system standard Built-in write protect switch, prevent data loss High speed data transmission rate, provides reliable copy / download / backup Including a Micro SD to SD adapter, wider application range Suitable for extending the memory capacity of mobile phone, MP3, MP4, digital video and camera, etc. Specifications: Memory capacity: 4GB Housing material: plastic Weight: 2 g Working voltage: 2.7 - 3.6V Working temperature: 0 - 60°C / 32 - 140°F Storage temperature: -20 - 85°C / -4 - 238°F Package included: 1 X TF card reader 1 X 4GB TF card 1 X Micro SD to SD adapter 1 X Plastic case