GPS and Bluetooth technologySmooth, sleek designHeat sensor to determine if the bracelet has been taken offNavy Bracelet ActivatorSKU: 217537123517253$50.00PriceSizeSelectQuantity*Add to CartRETURN & REFUND POLICYFree returns within 30 days. SHIPPING INFO$4.99 Shipping and Handling. Ships within 3 days.