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  3. NU21 vs Buster 400 HL

Nitecore NU21 vs Sigma Buster 400 HL

What NU21 does better (0) and where Buster 400 HL wins (2) — every spec side by side.

Nitecore NU21
Nitecore · 2023NU21
4.7Score
0 advantages≈ $30
vs
Sigma Buster 400 HL
Sigma · 2025Buster 400 HL
7.1Score
2 advantages≈ $25
Higher score
2.8Brightness & throw4.3
5.4Build & durability8.8

Why is NU21 better than Buster 400 HL?

NU21 has no measurable advantages in this pair.

Why is Buster 400 HL better than NU21?

  1. Maximum output360 lm vs 400 lm+11%
  2. Water protection (IPx)IPx6 vs IPx8+33%
Specifications

Side by side

Nitecore NU21Nitecore NU21≈ $304.7
Light output
Maximum output360 lm400 lm
Peak beam intensity840 cd—
Beam distance (ANSI FL1)58 m—
Light sourceLEDLED
LED & beam
Number of LEDs2—
Battery & charging
BatteryBuilt-in Li-ion / Li-Po—
Battery capacity500 mAh—
Maximum runtime37 h—
RechargeableYes—
USB-C chargingYes—
Battery level indicatorYes—
Build & durability
Protection ratingIP66—
Water protection (IPx)IPx6IPx8
Submersible to—2 m
Impact resistance (drop)1 m—
Body materialPlastic / polymer—
Size & weight
Weight44 g—
Modes & features
SOS / beaconYes—
Red lightYes—
LockoutYes—
Colours—Black
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