Ledlenser K4R – Small Light. Big Power.
The Ledlenser K4R redefines everyday illumination in a form that fits right on your keyring. Don’t let its size deceive you — this ultra-compact rechargeable flashlight delivers a powerful output of up to 120 lumens, far surpassing the capabilities of most smartphone flashlights.
Crafted with aerospace-grade brushed aluminum, the K4R combines minimalist elegance with practical utility, making it an essential lighting tool for daily life, travel, emergencies, and on-the-go tasks.
💡 High-Performance Illumination in a Minimal Form
Featuring a single Power LED backed by Ledlenser’s precision optics, the K4R delivers consistent and bright light across a wide field:
Max Luminosity: 120 lumens
Beam Distance: Up to 30 meters
Battery Runtime: Up to 3.5 hours (Low Mode)
Lighting Modes:
High: 120 lm for intense brightness
Low: 20 lm for extended runtime
Ideal for navigating dark environments, finding keys, inspecting bags, or lighting your way home, the K4R ensures dependable visibility right from your pocket.
🔋 Rechargeable. Convenient. Cable-Free.
No more fumbling for cables. The K4R features an integrated fold-out USB-A interface that plugs directly into any compatible port for seamless, cordless charging — a practical upgrade over traditional keychain lights.
Battery Type: Li-ion Polymer 3.7V
Battery Capacity: 180 mAh
Rechargeable: Yes (via built-in USB-A plug)
Runtime: 1–3.5 hours depending on mode
✨ Minimalist Design Meets Practical Function
The K4R combines form and function in every detail:
Brushed Aluminum Casing: Durable, elegant, and scratch-resistant
Front-Mounted Switch: Fast and intuitive control with one hand
Metal Carabiner Clip: Attach to keys, zippers, bags, or belt loops
Transport Lock: Prevents accidental activation during transport
Weighing only 20 grams and measuring just 52mm in length, it’s featherlight yet robust, offering carry-anywhere convenience without sacrificing performance.
🛡️ Engineered for Everyday Reliability
While compact, the K4R is built to withstand the demands of daily life:
Water Resistance: IP2X — protected against light dust and touch
Drop-resistant Aluminum Housing: Resilient enough for regular use
Dimensions: 52 mm (L) x 25 mm (W) x 11 mm (H)
Weight: 20 g
Whether clipped to your keychain or stored in a jacket pocket, the K4R is always ready for action.
🔍 Key Features at a Glance
🌟 Up to 120 lumens brightness with 30m range
🔌 Built-in USB-A charger for wireless charging (no cable needed)
🔒 Transport lock to avoid accidental activation
🧲 Integrated carabiner clip for easy attachment
⚙️ Precision optics with a wide, even beam
🧳 Ultra-lightweight at 20 grams
🛡️ Brushed aluminum housing for durability and style
🌍 Country of Origin: China
Perfect for Everyday Carry
The Ledlenser K4R is your go-to lighting solution for:
Everyday keychain use
Commuting and travel
Bag inspection and emergencies
Urban night walks
Discreet, quick lighting needs
Small Footprint. Bright Impact.
With the Ledlenser K4R, you get unmatched brightness, intuitive charging, and elegant design — all in a form that fits in your palm. It's more than a flashlight — it’s a daily essential that works as hard as you do.
Compact. Clever. Always With You.
