Maximum brightness in a mini format with the Ledlenser K4R LED keychain light
The Ledlenser K4R LED keychain light is a compact, powerful mini torch with state-of-the-art LED technology. Sophisticated LED technology combined with a practical design make the Ledlenser K4R the perfect pocket companion for all situations
Powerful performance in a small housing
Measuring just 2.5 x 5 cm and weighing 20 g, the Ledlenser K4R really does fit in any pocket. But this little everyday helper has a powerful 120 lumens and a burn time of up to 3.5 hours. An integrated COB LED ensures an even and wide light distribution. Even in critical situations, such as a breakdown at night, the K4R won't let you down: a long press on the power button activates an SOS function that sends a clearly visible SOS signal.
Quick access and foolproof handling
Thanks to the integrated carabiner hook, the Ledlenser K4R can be easily attached to a key ring, backpack or belt loop. So you always have light with you, wherever you go. And because the K4R is USB rechargeable, you don't even have to think about changing the battery: simply connect it to a power bank or laptop and the battery is full again.
The most important features at a glance
- Luminosity: Bright ness of up to 120 lm
- Long-lasting: Lights up to 3.5 hours
- Practical: Easy to recharge via USB without separate charging cable
- Protected: Integrated transport lock to prevent unintentional switch-on
- Well equipped: With snap hook for easy attachment
- Lightweight: One of the lightest in its class at only 20 g
As one of the world's leading manufacturers of LED torches and headlamps, Ledlenser stands for quality and reliability. Over 1,500 employees develop and produce high-quality lights for professionals and leisure users.
As a specialist in LED technology, the quality and sustainability of our products is particularly important to us at LUMITRONIX. We are proud of our durable products and their production directly in Germany. Together with renowned manufacturers such as Ledlenser, we ensure high product standards and a wide range of LED solutions to delight even the most demanding customers. Find out more about our offer for business customers here.
FAQ for the Ledlenser K4R LED keychain light
- How long does the battery of the Ledlenser K4R last?
The lamp shines for a full 3.5 hours before the battery needs to be recharged.
- How does charging the Ledlenser K4R work?
Simply unfold the integrated USB cable and connect it to a USB port. A separate charging cable is not necessary.
- Can the Ledlenser K4R switch on unintentionally when I'm on the move?
No, an integrated transport lock prevents it from switching on unintentionally.
Ledlenser K4R LED keychain light: plenty of light in a compact design
Experience a high-quality mini torch with state-of-the-art LED technology with the Ledlenser K4R keychain light. Robust, powerful and in elegant rose gold - always ready to hand for your lighting needs
Handy, compact and full of power
The Ledlenser K4R LED keychain light shows that compact size is no obstacle to extraordinary performance. With a luminous flux of up to 120 lumens and a maximum burn time of 3.5 hours, this torch offers outstanding lighting performance. Its robust and high-quality aluminium construction makes it a durable companion, while the mini carabiner ensures practical attachment.
Technical sophistication with ease of use
The Ledlenser K4R offers not only pure light, but also smart technologies for easy and convenient use. Fast and uncomplicated charging is guaranteed thanks to the fold-out USB-A interface, whereas a practical transport lock protects against unintentional switching on. In addition, you are always informed about the charging status thanks to the integrated charging status and battery display.
Advanced functions for your safety
In addition to a power mode, the K4R has an SOS function. A long press on the power button (3 seconds) activates a natural magnesium flash that can ultimately save lives in emergency situations. This makes the Ledlenser K4R not only a practical light source, but also a useful companion in emergency situations.
Over 1,500 dedicated employees at locations in Germany, Italy, Japan, China and Switzerland produce a range of torches and headlamps that is unrivalled anywhere in the world. Excellent quality and innovation characterise Ledlenser's products and give the company its high recognition.
FAQ about the Ledlenser K4R keychain
- How long does the battery last with constant use?
With constant use, the Ledlenser K4R offers a maximum lighting time of 3.5 hours.
- Can I use the lamp while it is charging?
It is recommended to keep the lamp switched off during charging to ensure optimal charging.
- How can I activate the SOS function?
Pressing the power button for a long time (3 seconds) activates the SOS function.
Product features of the Ledlenser K4R LED keychain torch
- Light intensity: Up to 120 lm
- Light duration: Maximum 3.5 hours
- Rechargeable: Easy and fast recharging via fold-out USB-A interface
- Safety: Practical transport lock prevents unintentional switching on
- Power source: 1 x Lio-Ion polymer 3.7 V rechargeable battery
- Design: High-quality aluminium case with carabiner hook
- Lightweight: Weighs only 20 g
- Compact: Very handy with a length of only 52 mm
- Colour: In elegant rose gold
Rely on the expertise of LUMITRONIX and benefit from 20 years of experience in LED technology. With the Ledlenser K4R keychain torch, you are investing in a sustainable, long-lasting and high-quality lighting solution.