Features: ● Read Speed: 10MB -18MB/second ● Write Speed: 5MB -8MB/second ● USB 2.0 interface with higher speed and higher stability ● Portable, lightweight, high-quality metal protects the connector ●Environment Temperature: -40°C - +70°C ●Storage Temperature: -50°C - +80°C ●USB Service Voltage: 4.5V-5.5V ●Storage Lifetime: More than 5 years ●Use A-class chip, can be erased repeatedly for 100,0000 times ●Operating System: Win98/ME/2000/XP/ Vista/win7 /win8, Mac OS 9.X/Linux2.4 or above ●USB connection:support Hot plug & Play. ●Easy to read and read in high speed ,No need drive/power supply only plug in. JASTER Bracelet USB Flash Drive 64GB Black Wristband Pen Drive 32GB Creative Gifts Memory Stick 16GB Water Proof External Storage 8GB 4GB 1. USB connection,support Hot plug & Play. 2. No external power supply . 3. Support different types of os. 4. Solid State Storage, Shock proof and electromagnetic proof. 5. Durable data storage. 6. Fast speed in write/read transfer. 7. Hardware Requirement: PC with USB connection,Notebook,MAC8.Capacity:128MB/4GB/8GB/16GB/32GB/64GB/128GB/256GB.