Key Features Fully functional watch with date and time capability High visiblity 1 1/4" diagonal display with 48V x 32H resolution Water surface temperature and digital depth readout 75 ft. remote operating range, 100 ft. depth capability Pulse backlit display and pulse lit Advanced Remote Sonar Sensor for night fishing Display powered by replaceable 1 Lithium 2450CR watch battery (included) Includes dual channel and waterproof Advancced Remote Sonar Sensor Additional Features Ultra-wide sonar coverage equal to twice the water depth One-touch menu navigation easily controls FishID, Depth Range, Fish Alarm, and Sensitivity Advanced Remote Sonar Sensor typically lasts for 500 hours of in-the-water usage. Wet Switch™ technology maximizes battery life by automatically shutting down when the Advanced Remote Sonar Sensor is out of water Advanced Remote Sonar Sensor replacements available on this web site, at your local tackle dealer and major outdoor retailers A/B Channel option allows use of two Remote Sonar Sensors in the same area at the same time with reduced interference. Waterproof design $89.95 Please call 1-908-642-8579 or e-mail us at NCTackle@aol.com with any questions. Thank you for shopping with us! FREE SHIPPING ON ORDERS OVER $250!