Compatible for Fitbit Alta / Fitbit Alta HR, Simple design, easy to install. Package Includes: 1 x Clip (No Tracker).<br> <b>Applications: </b>Outdoor sports, night running, cycling, walking, swimming(3 meters waterproof, can be used in most swimming pools, more than 30 minutes diving and high-board diving are not recommended), hiking, hiking, skiing, skating, rock climbing, daily work, matching clothes etc.<br> <b>Soft silicone: </b>Made of high quality soft silicone, no irritation on skin, Reduce contact with the skin, Avoid the feeling of discomfort when the sweat produced during exercise is in contact with the silicone.<br> <b>One-piece stainless steel clip:</b> The interior is a one-piece stainless steel clip, Strong rigidity, not easy to deform. Can be clipped to collar, cuff, pocket, button, scarf, belt, bra, sports bra, jacket, trousers, shoes, backpack etc.<br> <b>12 color options: </b>Black, Blue, Gray, Green, Navy Blue, Orange, Pink, Purple, Red, Teal, White, Yellow. Easy to match with a variety of clothing, sportswear, formal wear, T-shirts, pants, shorts, skirts, dresses, vests etc. No longer worry that the tracker doesn't match the clothes and left it home.