Compact light at your fingertips. The K4R key ring lamp raises performance, technology and design to a new level. This small everyday helper housed in a high-quality and well-designed aluminium case reaches up to 60 lumens and provides wide area illumination. The first light in the new K-series, the K4R is rechargeable and is equipped with the additional safety of an SOS distress signal mode. Special Information COB LED: This LED enables your Ledlenser to achieve high luminosity. Light Functions   Power - optimised light output S.O.S - hold the button for 3 seconds to activate the S.O.S safety mode, the distress signal the light emits is SOS in Morse code (3 x short, 3 x long, 3 x short) Switches Turn, press or both - how to switch these Ledlensers on: Front Switch - a switch on the front of the light Special Functions Extremely Compact - yet very powerful with 60 lumens Rechargeable - via the supplied USB cable S.O.S - distress signal mode for additional safety Metal Snap Hook - for easy attachment to keys, bags, etc. IP-Class: IPXX - no special protection against elements Casing: So that you can enjoy your light for a long time, every Ledlenser casing is made of high-quality metal. In this instance, it's aluminium to ensure especially light handling.   Technical Details: Ledlenser K4R Rechargeable Key Ring Lamp LED Configuration: 1 x COB LED Luminosity: MAX 60 lumens Battery Duration: MAX 1.5 h Battery and Casing Battery: Battery 1 x Li-ion Polymer 3.7V Water Resistance: IPXX Rechargeable: Yes Height and Weight Length (defocused): 50 mm Weight: 18 g