32000 data storage can record 180 days continuously, with recording interval of 1-255 minutes, configurable Temperature range: - 30 Celsius ~ 70 Celsius (- 4 Fahrenheit ~ 158 Fahrenheit) Temperature measurement accuracy: +/- 0.5 degree / 0.9 Fahrenheit Usage: one-time use Resolution: 0.1 Celsius Battery: 3.0v button battery (CR2450) Life time: 180 days (1 minute sampling interval) Communication : USB2.0 (computer), Bluetooth (mobile APP) Start mode: manual button/software timing Stop mode: manual / full stop Accuracy calibration : Nvlap NI Colour: white + blue Material: plastic Size: 73x30x7 mm Package Contents: 1 * USB Temperature logger Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.