Minn Kota Heading Sensor-Bluetooth - This Bluetooth-enabled heading sensor contains a compass that detects your boat's heading and communicates it to your trolling motor to enable the Spot-Lock Jog feature, which lets you move your Spot-Lock location in 5 ft. increments in any direction. Available as an add-on accessory for PowerDrive, Riptide PowerDrive, and Kayak Terrova trolling motors that come pre-installed with Bluetooth i-Pilot and Advanced GPS systems (model year 2017 and after). This heading sensor comes standard with Ultrex, Ulterra, Terrova, Riptide Ulterra and Riptide Terrova trolling motors that come pre-installed with Bluetooth i-Pilot and Advanced GPS systems (model year 2017 and after). Compatible with all Bluetooth enabled Minn Kota Advanced GPS Navigation systems and all Bluetooth enabled i-Pilot and i-Pilot LinkTM systems.* (Not required for QUEST motors) Power lead length: 12.5ft