The Fenix HM70R is an ultra-rugged, all-in-one aluminium headlamp designed for demanding activities like caving, tough work situations, and rugged outdoor use. It is powered by a large-capacity Fenix 21700 rechargeable battery, which is included. The headlamp is waterproof up to 2 metres for 4 hours. Its unibody housing, crafted from precision-machined heatsink aluminium, contains the replaceable battery, LEDs, and electronics, ensuring ultimate durability for the harshest working and outdoor environments. This headlamp is suitable for challenging conditions such as harsh working environments, caving, rescue operations, and sea fishing, providing impressive light output and extended run times. The HM70R features a USB-C type socket, located under a screw cover, for charging the included 21700 battery in approximately 4 hours using a 2A mobile phone charger. The main beam utilizes a 1600 lumen LED and reflector system, delivering a balanced combination of spot and wide-area spill light for simultaneous near and far illumination. Performance details for the main beam include: Low - 30 lumens (100 hours runtime, 26m beam), Med - 150 lumens (30 hours runtime, 53m beam), High - 500 lumens (6 hours runtime, 105m beam), and Turbo - 1600 lumens (2 hours total runtime, 186m beam). The Turbo mode is protected against overheating, reducing output to safeguard the LED and circuitry if the temperature reaches 65°C; maximum power can be restored once the headlamp cools down. Additionally, a pure flood beam with no distracting hard edges is available, offering two output levels: 70 lumens (48 hours runtime, 16m beam) and 400 lumens (8 hours runtime, 38m beam). The flood beam provides a smooth, powerful light perfect for close-up tasks or general illumination. A red beam is also included, offering 5 lumens for 400 hours (5m beam) and a Red SOS mode at 5 lumens for 800 hours (5m beam), ideal for preserving night vision or signaling. Note that beams cannot be operated simultaneously. Key features include digital regulation for constant output, mode memory, an LED battery level/charging indicator, compatibility with an 18650 battery (adapter sold separately), an inner waterproof charging socket, a perforated and breathable comfort headband with reflective strips for visibility, 2m impact resistance, a 180-degree tilt mechanism, beam lock-out functionality to prevent accidental activation, and a wide operating temperature range of -35°C to +45°C. It also fits the Fenix ALG-03 V2 helmet mount.