Features 1. Rotary timer: digital timer adjusts time by twisting outer ring, and one touch button to start/stop time countdown countup (timing range 0-99 minutes), designed for kitchen, classroom, fitness, meeting and more. 2. Multiple scenes use: kitchen cooking timer, kids timer, teachers timer, students timer, classroom timer, exercise timer, barking timer, meeting timer, game timer, egg timer, gym timer, BBQ timer. 3. Loud alarm & Magnetic: Three levels alarm sounds from silence up to 90dB. Magnets on back stick on refrigerator, oven, blackboard and any iron walls. 4. Large LED display: LED display screen is larger and brighter. Large and properly contrast screen allows reading from any angle in both bright and dark environments. 5. Energy saving: powered by 3 AAA batteries(Not Include), if timer doesn't run and without any operation, display brightness will turn dim then light off in a few seconds. Specification Material: Metal Color: Black, Red, Blue, Gold Size: 8 x 3 cm Weight: 70 g Working voltage: 4.5 V Working temperature: 0-50 degree Battery: 3 AAA Battery(Not Include) Package Include: 1 Digital Timer (Not include Batteries)