SMAHEAT 4.0-inch large multi-function fitness timer, Tabata/FGB/EMOM large screen interval timer, suitable for gym/large game/MMA counting/school?Warmly Tips?:The fitness timer requires of 5V DC or 6V DC power souras, the product package includes a 100-240VAC input 6VDC output power adapter, and ring stand and bracket for mounting, comes with 1 remote control, the remote control battery is 2xAAA (batteriesnot included )), this timer can only be controled by the remote control, TO keep the remote control properly, please if you lose it, amd contact us. the maximum control range of the remote control is about 30 feet. ?Size and Buzzer?:The fitness timer is a 1.5-inch high-character ultra-bright LED screen, the shell is made of aluminum alloy, light and durable, the size is 11(w)x3.55(h)x1.4(d), the timer digital red shows the time, and the digital blue Display timing, so you can see bright 1.5" LED high-definition numbers dozens of feet away, digital brightness can be adjusted in 5 levels, buzzer reminds you to start setting or end the sound of the device, which really helps you in your workout. The programming function can save up to 10 user-defined programs, P0-P10 in the interval clock, each with 9 user-defined intervals (from F1 MM: SS C1 MM: SS to F9 MM: SS C9 MM: SS ) , can support 99 rounds, the remote control button to set the interval, times, rest time, remember the corresponding number and enter the program, one key to enter the recovery training. Tabata: 8 sets of 20 sec/10 sec rest, FGB: (FGB1 5 sets, 5 min/1 min rest, FGB2 3 sets, 5 min/1 min rest), EMOM: 1 min/10 sec rest. ?Supported setting modes?:The fitness training timer have 5 different setting modes, normal time, interval timer, countdown, and stopwatch, normal timer that we have set two modes for you, 12 hours and 24 hours, minute-second countdown, minute-second interval mode, the stopwatch counts from 00 00:00 to 99 59:99, to meet your needs for different modes, a ltmally reminder: After each mode is turned on, there will be a 10-second countdown preparation time. ?Fitness timer?:This is a multi-function dedicated fitness timer that supports a 12-hour, 24-hour and real-time clock, countdown, positive timing,stopwatch, User-defimed interval mode, TABATA, FGB, EMOM, etc. The powerful functions can meet your all training needs in different fdoor venues, of course, can be applicalded to your daily life al well.