Led Lendser P4R Core Brightness and longevity are very important with this pen light. The P4R Core shines for its size with a superior light output of 200 lumens and has a removable rechargeable battery with micro-USB interface for eco-friendly charging. It offers a slim, lightweight design with Endcap Switch and pocket clip. The Ledlenser patented Advanced Focus System also provides precise light in spot and flood. Includes: P4R CORE Rechargeable LED Torch, 1 x rechargeable battery set, pocket clip, USB cable Features: Small, lightweight, powerful pen light – 55 g light (incl. battery), 150 mm long (defocused), up to 200 lm bright Outstanding Ledlenser light quality brightness, beam range and run time are ideally matched to the energy source Advanced Focus System for efficient, precise flood and spot lighting Practical clip to attach to shirt or trouser pocket Eco-friendly, rechargeable battery (via micro-USB port) Technical Features: LED Configuration: 1 x LED Color Rendering Index: 70 CRI Color Temperature: K - K    Boost   Power   Mid Power   Low Power  Luminosity1 (lm) N/A 200 90 15 Light range1 (m) N/A N/A 60 N/A Operation time1 (h) N/A 2 3 25 Battey Type: 10900 USB direct charging battery 3.7V Charge Time: 150 min Head material: Aluminum alloy Headband material: None Case material: N/A Head diameter: 15 mm Length: 154 mm Tightness: IP54 Weight: 55g  /  1.94oz German Engineering & Design Advanced Focus System® (AFS) Technology: The Advanced Focus System is the patented combination of a reflector AND lens to create a light system that provides both a focused beam for long-distance and a homogenous spill-beam for up-close reading. It allows a seamless transition from homogeneous low beam to sharply focused high beam.