Riester head mirrors and headlights show their particular quality in everyday use. The high level of wearing comfort means non-fatiguing operation even after long periods of use. Innovative light techniques guarantee optimum viewing conditions. ri-focus® LED provides ideal illumination of the examination area with a 40 cm distant, focusable, white and cold light with 5500 Kelvin and 7100 lux. The LED lamp employed has a life of approx. 15,000 hours and can be supplied with power using standard commercial AAA batteries, long-life lithium batteries or NiMH rechargeable batteries plus plug-in charger, so that no annoying power cord need be used during the examination. • Headband version, with built-in battery compartment and integral charge jack, can be optionally fitted with 2 lithium batteries size CR 123 A, 4 batteries size AAA (alkaline) or 4 rechargeable batteries size AAA (NiMH). • Headband cleaning made easy by inner, removable and washable padding. • Particularly comfortable with balanced, infinitely adjustable headband. • On/off switch on battery compartment. • Charge jack for plug-in charger integrated in battery compartment. • Focusable LED lamp at a distance of 40 cm approx. Ø 40 mm - Ø 200 mm, infinitely adjustable. • White LED, 1 Watt with 5.500° Kelvin, 6 V. • Battery operation: approx. 30 hrs. with lithium batteries, approx. 90 min. with alkaline batteries Type AAA. • Rechargeable battery operation: approx. 90 min. with fully charged battery. • Weight: 210 g without batteries, 242 g with CR 123 A lithium batteries, 259 g with rechargeable AAA batteries. • Delivery in carton.