s. Size can be adult and youth. We can print a logo on the central part of it. Capacity can be 512MB, 1GB, 2GB, 4GB, 8GB, 16GB, 32GB,64GB. Operating Temperature is -32°F to 140°F (0°C to 60°C). Storage Temperature is -4°F to 185°F (-20°C to 85°C). Read speed 18M/S,write speed:3.8M/S (USB2.0). Working voltage is 5V with wrking power 300mA. Guaranteed 2 ear warranty. Operation system Windows 98/ SE /ME /200silicone lymphedema bracelet0 /XP/ 7/ Vista, Linux 2.4.x, Mac Windows 7, etc. The advantage of oursilicone lymphedema bracelet product. 1. Make logo according to customer"s design, 2. File preload, files can be non-erasable. 3. Advertisement files Auto-play once USB was plugged into the computer. 4. Website auto pop-up once USB was plugged into the computer. 5. Disk partition. 6. Password protection. silicone-wristbandrubber-message-bracelets so most importantly, it is easy way to meet the request. It shows up a slogan and logo. A glowing wristband can glow several colors, it is the best for night event like bar party, concert or night walk. We can make it party city theme. A glow in dark silicone wristband can glow green or blue after absorbing strong light energy under the effect of phosphor which is very small amount added and green to human. The glow will fade gradually in about 3h depending on how much light it absorbs. The logo can be same as regular debossed, embossed or printed on the glowing wristbands. Order less than 100pcs, get 50pcs free and 5pcs keychains free. Order 100pcs or more, get 100pcs free and 10pcs keychains free. All the free wristbands and keychains are same design of the one you order.