Cyclops Poseidon Rechargeable Headlamp with 21700 Battery

The Cyclops Poseidon rechargeable headlamp is a solid workhorse for hunters, anglers, campers, and anyone who needs dependable hands-free light in the field or at the workbench. Built around a 20W CREE XHP5.02 LED, this headlamp delivers 2000 lumens at full power with a beam that reaches out to 200 meters—plenty of punch for spotting game, navigating dark terrain, or setting up camp after sunset. The 21700 rechargeable battery keeps you out of the disposable-battery treadmill, and the whole rig tips the scales at just 220 grams, so it won't fatigue your neck during long hours outdoors.

Control is refreshingly simple: a single switch handles brightness modes (100%, 40%, 15%, and 3%), with a long press to activate the full-power burst that holds for 40 seconds before stepping back to your last selected level. A double-press flips on strobe mode if you need it. The IPX4 rating means it'll stand up to splashes and light rain without bailing on you, and the built-in magnet lets you mount it hands-free on metal surfaces when you need to work in a fixed spot. Runtime at the 40% brightness level stretches to 5 consecutive hours—a solid compromise between output and battery life for most hunting and camping missions.

If you're tired of fumbling with flashlights or burning through AA batteries, the Poseidon's rechargeable 21700 cell and variable modes make it a practical step up. It's not a minimalist ultralight piece, but that heft buys you real durability and enough output to handle serious darkness without nickel-and-diming you on battery costs.

Key Features

• 20W CREE XHP5.02 LED produces 2000 lumens at maximum brightness
• Integrated 21700 rechargeable battery—no disposables needed
• Four brightness levels (100%, 40%, 15%, 3%) plus strobe mode for flexibility
• Beam reaches up to 200 meters at full power
• IPX4 water resistance for rain and splash protection
• Built-in magnet for hands-free mounting on metal gear
• Lightweight at 220 grams including battery
• 5 hours continuous runtime at 40% brightness

Specifications

Frequently Asked Questions

What runtime should I expect at full brightness?

The headlamp delivers 2000 lumens at 100% power; the full-power mode is designed as a burst function that holds for 40 seconds before dropping back to your last selected brightness level. At the 40% setting, you'll get approximately 5 hours of continuous use before the battery needs recharging.

Is the battery removable and rechargeable?

Yes. The Poseidon uses a 21700 rechargeable battery, which you can remove to charge separately with a compatible charger. This eliminates the need for disposable batteries and saves money over time.

Will this headlamp work in wet conditions?

The IPX4 water rating means it can handle light rain and splashing without failing. It's not submersible, but it's solid for hunting, fishing, and camping in typical outdoor weather.

Can I use the magnet to mount this hands-free?

Yes. The built-in magnet allows you to attach the headlamp to metal surfaces, freeing up your hands when you're working on gear, setting up camp, or performing tasks that need both hands.