Otsalamppu Ledlenser HF4R Work musta IP68 LED 20 lm

The Ledlenser HF4R Work Black IP68 LED 20 lm is a rechargeable headband flashlight designed for hands-free illumination in work and outdoor environments. This compact headlamp delivers a minimum of 20 lumens from a single LED and is built for durability with an IP68 rating for protection against dust and water. Weighing approximately 79 grams, it features a tilting light head, multiple brightness settings, a red light mode and an integrated rechargeable battery charged via a USB magnetic contact system. The unit operates reliably across a temperature range from -20 °C to 40 °C and includes battery and charge indicators plus a transport lock to avoid accidental drain.

Advantages

The HF4R Work offers a balance of low weight and robust protection, suitable for professional and industrial use. Three brightness levels and a dedicated red light allow adaptable illumination for close-range tasks while a high colour rendering index (CRI) improves visibility of details. Integrated charge and battery indicators help plan runtime, and the transport lock prevents unintended power-on. Magnetic USB charging simplifies recharging without removing the battery.

Suitable for

• Industrial and workshop tasks where hands-free illumination is required
• Maintenance and inspection work in dusty or wet conditions
• Outdoor activities such as camping or nocturnal repairs
• Helmet-mounted applications on construction or utility sites

Key specifications

• Light source: single LED with minimum 20 lumens output
• Operating temperature range: -20 °C to 40 °C
• Ingress protection: IP68 (dust-tight and protected against prolonged water immersion)
• Weight: approximately 79 g
• Colour: black
• Power: integrated rechargeable battery with magnetic USB charging
• Beam adjustment: head tilts up to 45° for directed illumination
• Light modes: multiple brightness levels plus red light; battery and charge indicators; low battery warning

How to use

Fasten the headband securely around the head or attach the lamp to compatible helmet mounts. Use the button controls to switch between brightness levels and to activate the red light mode. Tilt the lamp head up to 45° to aim the beam precisely at the work area. Before first use, charge the integrated battery using the Magnetic Contact Charge System connected to a USB power source; monitor the charge indicator to determine when charging is complete. Engage the transport lock during storage or transport to prevent accidental activation.

Recommendations

For consistent performance, charge the headlamp before prolonged use and avoid exposing the unit to temperatures outside the specified -20 °C to 40 °C range. After use in wet or dusty conditions, allow the lamp to dry before storing and check the headband and mounts for wear. Use the lower brightness settings for extended runtime and reserve higher output for short-duration tasks requiring increased visibility.