Sony MemoryStick Micro 4GB (M2) + USB Adapter Sony Ericsson Packaging. Internal memory: 4096 MB, Flash card type: Memory Stick Micro (M2), Write speed: 15 MB/s. Weight: 1 g, Width: 12.5 mm, Depth: 1.2 mm. Standby current: 100 mA, Input voltage: 2.7/3.6 V. Operating temperature range (T-T): -25 - 85 °C