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Nitecore

Nitecore NU40

Lightweight, high performance USB-C rechargeable headlamp with max 1000 lumens output, built-in 18650 Li-ion battery, multiple brightness levels and red light mode, IP68 waterproof and impact resistant.

Last updated

Weight116 g (4.09 oz)
PriceUS$61
Max lumens1000 lm
BatteryBuilt-in 18650 Li-ion 2600mah Rechargeable
Technical Specs

Specifications

CategoryHeadlamp
Length79.8 mm (3.14 in)
Head diameter43.9 mm (1.73 in)
Body diameter46.1 mm (1.81 in)
Max lumens1000 lm
Max candela2700 cd
Beam distance100 m (328 ft)
Max runtime7200 min
Battery typeBuilt-in 18650 Li-ion 2600mah Rechargeable
RechargeableYes
Charging typeUsb-c (5v 2a)
IP ratingIP68
Impact resistance2 m (7 ft)
MaterialPc Plastic Rear Housing With Aluminum Alloy Front Housing
Switch typeDual Button Interface (separate On/off And Mode Switches)
Output Profile

Modes

TurboHighMediumLowUltra LowRed Light Constant OnRed Light Slow FlashSOSBeacon
Carry Profile

Best for

HikingTrail RunningCampingCyclingMaintenanceOutdoor Activities
Field Signals

Common praise

Lightweight and compact design

High maximum output with uniform beam

Long runtime especially on low modes

USB-C fast rechargeable

Durable construction with good heat dissipation

Multiple brightness levels and special modes including red light for night vision preservation

Watchlist

Common complaints

Runtime on highest output (Turbo) is limited

Some users may prefer longer beam distance for certain tasks

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