1. Multifunctional: Gym timer is including 10 functions, such as clock display, 3 groups of custom for interval timer, count up by round, countdown by round, stopwatch, alarm clock, 10 seconds countdown, beep buzzer control.2. Last 30 Hours: The interval timer can last up to 30 hours on a single . Give you plenty of time to use and comfortable use process. 1000mAh large battery.3. Low Battery Reminder Function: The workout timer adopts the low battery reminder function, so you won't notice the battery is low during your workout.4. Made of ABS Material: This gym fitness timer is made of ABS material and small and portable. You can take this timer anywhere and start training.5. Wide Use Scenarios: The workout timer can be widely used for home gyms, home garages, schools, gardens and so on.Spec:Item Type: TimerMaterial: ABSBattery: Polymers Battery x 1, Battery Capacity 1000mAh(shipped with built in battery)PackageList:1 x Timer1 x USB Cable