-Full protective shock-proof, scratch-resistant, anti-skid and dirt-resistant. -Superior EVA soft shell material, metal looking sense, mechanical texture, lightweight. -Anti slip silicone, comprehensive breathable perspiration, comfortable to wear. -Large capacity, convenient to organize the personal items. -Strong magic tape is more durable for using, comfortable to wear. -Reflective marking for safe nighttime activity. -Multifunctional arm band is suitable for running, riding,climbing, etc.
Special Features: 1.Displays the calories burnt. 2.Displays the number of turns. 3.Displays the amount of time used. 4.Instantly giving loops and timer of rotation during shaking by synthetic speech.