IBobber is the fish finder that syncs with your smart phone or tablet. Find fish down to 135, and displays then in 2 fish sizes (under 15; / over 15). Sync via Bluetooth Smart up to 100; away so you have a fish finder thats as mobile as you are. You can map waterbed contours, GPS tag hotspots, log your trip and share it on social media. With lunar calendar, fish alarm, weather sync, and stunning graphics. Sonar depth up to 135ft (41 metres) depth scale, fish depth. Tags 2 fish sizes (under 15; / 38cm & over 15; / 38cm). Built-in strike alarm, alerting you when the fish bite. Bluetooth smart 4.0 that support iOS (apple) 6.0, 7.0, and 8.1 operating systems, and phones and tablets for android that run v4.3 and later. Size H37, W28, D29cm. Li-Ion (included). Manufacturers 2 year guarantee.