Fish Hawk Lithium Ultra Probe FH400

The Fish Hawk Lithium Ultra Probe delivers the most important trolling data right where it matters—at depth. By measuring speed, water temperature, and the actual depth of your downrigger (via water pressure), the Ultra takes the guesswork out of trolling. It’s also fully compatible with the Fish Hawk X4 & X4D, making it a smart upgrade for existing users.

• Measures speed, water temperature, and actual depth at the probe
• Lithium polymer battery delivers 40 hours of fishing per charge
• Quick charging: full in 2–4 hours, partial in 20 minutes
• New charge status indicator and winter storage mode
• Water-activated probe preserves battery life
• Compact design cuts through water with minimal blowback
• Works with any downrigger
• Transmits data using a unique 70kHz sonar signal
• Backed by a two-year warranty