Nitecore E4K 4400-lumen flashlight (Nitecore, SKU: E4K) is a compact EDC flashlight equipped with four CREE XP-L2 V6 LEDs. It provides an output of up to 4,400 lumens, a beam distance of up to 211 m, five brightness levels and three special modes. The included 5,000 mAh 21700 Li-ion rechargeable battery has a built-in USB-C port, allowing it to be charged without a separate charger.

Key features

• maximum output of 4,400 lumens and a beam distance of up to 211 m
• four CREE XP-L2 V6 LEDs
• five brightness levels and Strobe, Beacon and SOS modes
• two-stage side button providing control of all operating modes
• direct access to Ultralow mode and momentary Turbo mode
• memory for the last used brightness level
• Strobe mode using randomly changing flashing frequencies
• remaining power indicator
• power source voltage indicator with an accuracy of ±0.1 V
• ability to operate with a 21700 rechargeable battery or two CR123 batteries
• ATR technology adjusting the output according to operating conditions and temperature
• ability to stand the flashlight vertically on the rear of the housing
• aero-grade aluminium alloy housing with an HA III hard-anodised finish
• IP68-rated dust and water resistance and impact resistance from a height of 2 m

Set contents

• Nitecore E4K flashlight
• Nitecore NL2150HPR 21700 5,000 mAh Li-ion rechargeable battery
• USB-C charging cable
• clip
• lanyard
• holster
• magazine for 2 CR123 batteries
• spare O-ring

Technical specifications

• manufacturer: Nitecore
• model: E4K
• type: EDC flashlight with a replaceable rechargeable battery
• light source: 4 CREE XP-L2 V6 LEDs
• beam colour: white light
• Turbo mode: 4,400 lumens / 30 minutes / 211 m
• High mode: 1,050 lumens / 3 hours 15 minutes / 105 m
• Mid mode: 320 lumens / 7 hours 30 minutes / 57 m
• Low mode: 50 lumens / 45 hours / 21 m
• Ultralow mode: 2 lumens / 700 hours / 3 m
• special modes: Strobe, Beacon and SOS, 4,400 lumens
• maximum beam intensity: 11,100 cd
• primary power source: 1 3.6 V / 3.7 V 21700 Li-ion rechargeable battery with a discharge current above 15 A
• battery included: Nitecore NL2150HPR 21700, 3.6 V, 5,000 mAh
• alternative power source: 2 CR123 batteries or 2 RCR123 rechargeable batteries
• Turbo mode availability: only with a 21700 rechargeable battery with a discharge current above 15 A
• incompatible power sources: 21700 rechargeable batteries with a discharge current below 15 A and 18650 rechargeable batteries
• charging port: USB-C, integrated into the NL2150HPR rechargeable battery
• reflector: smooth SMO reflector
• optical system: crystal coating and PDOT technology
• lens: optical lens with a double-sided scratch-resistant coating
• housing material: aero-grade aluminium alloy
• finish: HA III hard anodising
• IP rating: IP68, submersible to 2 m
• impact resistance: drop from a height of 2 m
• length: 117.56 mm
• head diameter: 28.6 mm
• tube diameter: 25.8 mm
• tail diameter: 28.1 mm
• flashlight weight: 80 g

The Nitecore E4K combines high output with compact construction and compatibility with different power sources, making it suitable for everyday use, travel and outdoor activities.