LEAP TF6204 Interval Timer • Set interval times: 2 - 99 times cycle countdown, 1 - 2 intervals each time, max. 99 minutes 59 seconds each interval• Count up timer: 1 / 100 second display, max. 99 hours 59 minutes 59 seconds• Special features: Alarm and vibrate alert function• Perfect for yoga, boxing, weight lifting, running, tabata training and other GYM training• Power supply: 1 x AAA battery ( not included )• Material: Electronic components, ABS shell, environmentally friendly and durable Operation Instructions • Power on or off: Press any button to power on and press the NEXT button for 2 seconds to power off• Count up / down mode1.When the timer is not in countdown mode, press the button NEXT and CHANGE to enter count up mode2.When the timer is not in count up mode, press the button NEXT and CHANGE to enter countdown mode3.In countdown mode, press the STRAT button three times to suspend countdown and press the STRAT button one time to continue 4. In count up mode, press the START button one time to suspend or continue count up, press the button CHANGE one time to return to zero when count up is suspended Type: Timer Brand: LEAP Model: LEAP TF6204 Gender: Unisex For: Sports Power By: 1 x AAA battery ( not included ) Material: ABS, Electronic components Functions: Interval Timer, Count up Timer Color: Black Package weight: 0.123 kg Product size (L x W x H): 6.5 x 5 x 2.5 cm / 2.55 x 1.97 x 0.98 inches Package size (L x W x H): 19 x 11 x 6 cm / 7.47 x 4.32 x 2.36 inches Package contents: 1 x LEAP TF6204 Interval Timer, 1 x Bilingual User Manual in English and Chinese