The watch with extensive functionality M-Tac. This model is an essential assistant to people who lead an active life, love to hike in the mountains, and are ideal for the military. The unique features possessed by the watch M-Tac will be useful not only for people involved in extreme sports such as skydiving but will be irreplaceable in everyday life. It can show you the atmospheric pressure and air temperature. By tracking the watch, you can predict in advance the deterioration of health and distribute your workload well at present. M-Tac multifunction tactical watch is equipped with a rugged, durable case made of polycarbonate + rugged stainless steel bezel. Glass is made of organic polycarbonate, which resists scratches and chips without any problem. Water-resistance 3 ATM. The watch features multifunctionality for versatile use, making it an ideal choice for tactical missions and everyday using. Material: plastic Strap material: rubber Glass: polycarbonate Mechanism type: electronic Water resistance: 3 atm Dimensions: diameter - 1.7" (46 mm), thickness - 0.4" (14 mm) Strap length: 7.5" (190 mm) Weight: 0.3 gs (165 grams) Battery code: CR2032 Functions: altimeter barometric pressure weather display thermometer compass 3D pedometer 3D pedometer memory for the previous 7 days counting calories calculation of distance traveled stopwatch timer two alarm clocks LED lighting calendar possibility of choosing a mode with or without sound. adjusting the brightness of the display metronome to maintain the rhythm of running time format is 12/24. double time