RBX Active RBXTR001M3 Bluetooth Activity Tracker, Black/Blue Silicone Unisex One-Button Wireless Activity Tracker Watch for Use with Free Mobile Application. Silicone Fashion-Forward Printed Straps Tracks Steps, Calories Burned & Distance Traveled Digital Time Display Set Daily & Weekly Goals Call & Text Notifications Alarm Clock Sleep Monitor 3 ATM Water Resistance 16 mm Diameter, .65" Band Width