TickTime Rechargeable, Approximately 10 Hours of Use TickTime uses a built-in lithium battery instead of environmentally-damaging dry cell batteries, allowing for approximately 10 hours of use on a single full charge. 【Countdown】 This timer features six of the most commonly used time durations for daily time management, arranged on the lateral surfaces of a hexagonal prism. It has an innovative design where the countdown for the time indicated by the number facing upwards begins simply by tilting it sideways, without pressing any buttons. 【Smart Design, Ultra-Lightweight】 With a metallic body and smart design, it's only about 5cm in size and weighs a mere 58g, making it easy to carry around. 【Specifications】 Time Settings: 3 minutes, 5 minutes, 10 minutes, 15 minutes, 25 minutes, 30 minutes (6 total) Battery: Built-in rechargeable lithium battery Continuous Use Time: 10 hours Lamp: Charging: Lights green. Charging Complete: Does not light green Package Contents: Ticktime main unit, Type-C charging cable The product cannot be used while charging. Product Size: 41 x 47 x 45 mm Weight: Approximately 52g (main unit) Color: Silver Material: ABS resin