The Acebeam H18 is a versatile headlamp which features dual light sources, offering up to 4000 lumens of wide-flood white light and a red light for night vision preservation. It is powered by a single 6400mAh rechargeable 21700 lithium-ion battery, which can be recharged via USB Type-C either directly on the battery or through the torch body's USB-C port, protected by a metal cover. The white light is delivered by four LEDs, available in 6500K cool or 5000K neutral options, producing a smooth, non-PWM wide flood beam for flicker-free illumination. The red light source is specifically designed for night vision preservation. Constructed from aluminium alloy with a hard-anodised finish, the H18 has an IP68 ingress protection rating, making it fully submersible to 2 metres for 30 minutes, and offers 2 metres of impact resistance. A quick-detach bracket allows for easy mounting and removal, complemented by a 180° adjustable tilt for precise beam direction and a breathable headband for comfort. It provides a maximum output of 4000 lumens (6500K variant), a beam distance of 162 metres (6500K variant), and an impressive maximum runtime of 280 hours (ultra low mode).