Compatibility: this replacement bracelet is compatible for Charge 4 / Charge 3 / Charge 3 SE Device without charge 3 included Two sizes available: small size for 5 5 - 7 1 wrist, large size for 7 1 - 8 7 wrist The size can be adjustable with buckle Premium waterproof material: The charge 3 sport wristband is made of flexible elastomer material, sweat and water resistant, lightweight and easy to dry, great choice for sports Don't worry about falling: charge 3 wristband with metal buckle and fixing ring provides stable and reliable performance to keep the band secure Multi choice: different color bracelets for your charge 3 / charge 4, customize your charge 4 bracelet to suit different occasions in your daily life