The tiny gym workout timer is a solid timer that feels great to hold. It can be used for any Cross Fitter who wants to do workouts on vacation, at non-CrossFit gyms, or at home! The sleek design has been considered both inside and out, to maximize durability. There is no need for a remote control or phone app to operate. The compact workout timer features seven workout modes, a magnetic back and easy-to-use programming to take training to the next level at anyplace for all athletes. Product details Dimension: 155mm X 47 mm X 22 mm 1 inch (2.54 cm) height of digits Display: crystal bright led display for maximum visibility. LED color: 2 digits green, 4 digits red. Material: ABS sleek case & acrylic lens, integrated top buttons. Weight of timer: 200g Power input: AC 100â??240 volts, 50/60 hertz; Output: DC 5V, 1A Power supply: Internal lithium battery supply or 5W USB power adapter supply. Rechargeable Lithium battery lasts 10 hours when fully charged for 3 hours. Product Functions Clock: 12-hour/ 24-hour HH:MM time display. Countdown timer: Programmable, max countdown from 99:59. Format: Dn MM: SS. Count up timer: Programmable, max count up to 99:59.Format: UP MM: SS. Interval timer: Programmable workout time, rest time and rounds, up to 99 rounds. Like HIIT, EMOM, MIIT. TABATA: Pre-programmed interval timer, 8 rounds of 20 seconds workout and 10 seconds rest. Fight Gone Bad timer: Pre-programmed interval timer, 3 rounds of 5X1 minute workout and 1 minute rest. Stopwatch: Count up from zero up to 99 minutes 59 seconds and 99 hundredths of a second. Format: MM: SS: MS. Product Features Pocket size, for use in any home or garage gym. Sleek look Strong magnet on the back to be attached to metal surface. Rechargeable built-in 800mah battery (USB-C charging cable) Low battery warning. Multiple modes perfect for different workouts like HIIT, EMOM. Protective silicone cover available