KARL STORZ 11301 D3 Portable Light Source Very good condition FEATURES: Portable LED light source specifically designed for endoscopy and fiber-optic instruments. Battery-powered using replaceable 3 V CR123A lithium batteries (no mains power required). Long operation time: approx. 120 minutes of continuous use per set of batteries. Coarse-thread connection to attach directly to compatible endoscopes (requires appropriate adapter such as 495G). LED illumination: Stable, clear white light close to daylight with a colour temperature ~6 000 – 6 700 K for good visualisation. Compact & lightweight: Extremely small form factor — typically around 95 × 40 × 20 mm and ~ 70–80 g (without batteries) . Simple operation: Intuitive on/off switch and often includes a battery-end-of-life indicator to warn before insertion. Robust design: Suitable for use in anaesthesia, intensive care, emergency medicine, bronchoscopy, airway management and routine endoscopic procedures . Technical Highlights LED light source with long lifetime (tens of thousands of hours). Portable and mobile — no cables limit movement during procedures. Designed for reliability even in situations without convenient access to mains power . This model is a practical, compact, and mobile light source used primarily in clinical settings where mobility and quick deployment are important (e.g., airway management, ICU, emergency endoscopy).