Breadcrumb Bluetooth Bolt Nock .284 Flat 3-Pack Nothing is more irritating than stopping your practice or pursuit to search for a missing arrow. Losing a fully loaded arrow thats affixed with a broadhead and lighted nock can easily set you back $60. On top of that, the search for lost arrows can eat up a considerable amount of your time. The Breadcrumb Bluetooth Trackable Nock saves you from both of these frustrations so you can get back to more enjoyable hunting. Precise Pontact Points - Engineered and molded for a controlled and consistent arrow release to ensure accuracy Easy On/Off Activation - No magnets, pullout switches or knife points required The Breadcrumb Bluetooth Trackable Nock is armed and ready with a simple touch of its water-resistant activation button. Ultra Bright LED - Activated upon firing, Breadcrumbs LED light acts as an illuminated tracer in flight, and becomes a pulsating beacon to aid in retrieval. PCB Processor - The brains behind it all, this tiny microprocessor controls the light, sound and Bluetooth tracking functions. Accelerometer - This powerful piece of hardware uses a motion sensor to activate when fired and not while in your quiver. Sound Chip & Speaker - When an arrow is covered by earth and brush, this unique nock feature calls out to provide you its hidden location Bluetooth Transmitter - With a range up to 100 yards, this tech component reaches out to communicate directly with your smart phone. Replaceable Battery - Providing more than 35 hours of continuous tracking power, the replaceable battery is controlled by the PCB to monitor battery life and conserve energy when needed. Features: Style: Crossbow - Flat Size: .284" Precise Contact Points Easy on/off activation Ultra bright LED PCB Processor Accelerometer Sound Chip and Speaker Blue tooth Transmitter Replaceable battery