3ATM Life Water Resistant Sealed body, you needn’t take off the watch when it's rainy. 2.5D Curved HD Glass Adopts 2.5D Arc Curved HD glass, High light transmittance, time is clearly visible, so beautiful and attractive. Alloy Steel Casing The shell is made of alloy sand blast and vacuum ion plating process, with excellent mechanical properties and wear resistance, lightweight, suitable for daily life sports wear. Skin-friendly Cloth Strap Adopts sport medical anti-allergy cloth, anti-sweat breathable, skin-friendly and comfortable. Support Android iOS APP Approx.10-15m Range（The range will vary due to the different obstacles）