1Super cool appearance designed, heart rate detection for whole day, 2 LED green light sensors in the rear. 2Bottom designed to prevent water from entering, inner equipped with precision waterproof ring. 3Specially designed for outdoor sports enthusiasts, functions designed for outdoor playing, with powerful functions such as step count, timing, compass, diving, GPS. 4Small size and lightweight, easy to carry and store, convenient to use. 5Made of high quality materials, sturdy, durable and long service life.
