The ri-focus LED Headlight from Riester offers ideal illumination for examination at a distance of 40cm. The LED headlight has an easy-to-clean headband, which is equipped with removable, washable padding. The LED bulb has a lifespan of approx. 50,000 hours. Product details: - Ri-focus LED headlight with integrated battery compartment and integrated charging socket - Very white and cold light (6,500° Kelvin) - Continually adjustable focus of approx. Ø 40 mm - Ø 200 mm (40 cm working distance) - Comfortable, balanced and fully adjustable headband - Headband and padding on the inner side is easy to clean - On/off switch located on the battery compartment - Battery compartment on the back of the headband - Operates with non-rechargeable lithium batteries or NiMH rechargeable batteries - Weight without batteries approx. 210g - Battery operation approx. 4 hours with lithium batteries. - Battery operation approx. 90 minutes rechargeable batteries from a full charge.