Gym Timer Portable Workout Interval Timer Fitness Clock Large Digital Display with Built in Powerful Magnet Blue and Red Item Type: Gym Timer Material: Rubber Model: Q20 mini Power Supply: 18650 Lithium Ion battery 1500mAh (Included) Machine Charging Input Voltage: DC 5V Mode: CLOCK: HH:MM Format 12/24 hours MIIT: 1 minute training, 1 minute rest, 99 cycles bad HIIT: 30 seconds training, 30 seconds rest, 99 cycles TABATA: 20 seconds training, 10 seconds rest, 8 cycles EMOM1: 1 minute training, no rest, 17 cycles EMOM2: 1 min 30 sec training, 1 min rest, 17 cycles FGB1: 5 min training, 1 min rest, 5 cadences FGB1: 5 minutes training, 1 minute rest, 3 cycles WRC: 10 sets of custom training patterns UP: MM:SS format 00:00 to 99:59 DOEN: MM:SS format 99:59 to 00:00 STOPWATCH: MM:SS:ss (1/10s)(1/100s) format 00:00:00 to 99:59:59