<p>This Certified Refurbished product has been tested and certified to work like new, with minimal signs of wear, by a specialized third-party seller approved by Amazon. The product is backed by a minimum 90-day warranty and may arrive in a generic brown or white box. Accessories may be generic and not directly from the manufacturer.</p><p>Tracks Activities via Health Mate App</p><p>iOS and Android Compatible. Bluetooth 4.0 Connectivity</p><p>Automatic Activity Detection. Tracks Walking, Running, and Swimming</p><p>Monitors Sleep Quality. Vibrating Wake-Up Alarm</p>