Thermometer and 2-in-1 Multi-functional Design: With smart digital display, SP/ button is start and stop, press and hold SP/ and S at same time to switch temperature between F and C, M and S to set minute and second time. Smart Digital Display: The numbers on display are clearly visible in bright sunlight, even in a swimming pool, and large digital display makes it easy to see cold bath temperature and ice bath time at a glance. Easy to Use: Put it in water and it time immediately and pause once it leaves water. If you put it back in water within 6 seconds, it continue to run; leaving water for more than 6 seconds clears timing. Enhance Your Bathing Experience: With waterproof and floating function, accurately monitor temperature and time, it is a necessity to measure water temperature and control bathing time, enhance your bathing experience. Specification: Product Name: Ice bath Thermometer Temperature Range: -20C to 70.0C (-4F to 158.0F) Power Supply: LR44x2pcs Operating Voltage: 3.0V Colour:black & white Material:plastic The actual product may have slight color difference or difference, which not affect use Package Contents: 1 * Water Bath Thermometer Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.