Verdict
Head-to-head · Best Rechargeable Headlamps

Nitecore NU27 600 vs Sofirn HS21

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Nitecore NU27 600 and Sofirn HS21 score essentially the same (4.3 vs 4.3). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Nitecore NU27 600
Ranked #4 in Best Rechargeable Headlamps
Nitecore NU27 600
$45as of May 28

The Nitecore NU27 headlamp offers adjustable color temperature with warm, neutral, and cool white options, making it versatile for different outdoor activities. Reviewers noted its lightweight design at 1.98 oz and USB-C charging capability that completes in about 1.25 hours. The unit features multiple brightness modes with consistent performance across color settings. However, some reviewers criticized the removable headlamp body as having no practical benefit and noted the charging indicator's lack of clear visual feedback. This headlamp is best suited for hikers and campers seeking a lightweight, multi-functional lighting solution, though those wanting more robust attachment systems may want to consider alternatives.

Strengths
  • Adjustable color temperature with warm white, neutral white, and cool white emitters
  • USB-C charging with 1.25-hour charging time
  • Lightweight design at 1.98 oz
Watch-outs
  • Headlamp body can be easily removed from headband without practical benefit
  • Charging indicator uses only blue LEDs without clear visual feedback of charge level
Sofirn HS21
Ranked #5 in Best Rechargeable Headlamps
Sofirn HS21
$54.99as of Jun 7

The Sofirn HS21 is a T-shaped headlamp featuring an infrared gesture sensor, one spotlight LED, six floodlight LEDs, and three red LEDs. Reviewers praised its hands-free operation and multiple lighting modes, with the floodlight LEDs offering high CRI at 99. However, discrepancies between advertised and measured flood lumens were noted, with some reviewers reporting up to 30% lower output. Build quality concerns regarding bracket durability were also mentioned. This headlamp suits users seeking versatile lighting options with gesture control, though those prioritizing exact lumens may want to consider alternatives.

Strengths
  • Features gesture sensor for hands-free operation
  • Provides multiple lighting modes including spot, flood, and red LEDs
  • Rechargeable 18650 battery with USB-C charging capability
Watch-outs
  • Flood mode lumens significantly lower than advertised
  • Build quality concerns with bracket snapping reported by some users

How they stack up

Nitecore NU27 600

The Nitecore NU27 600 stands out from the Petzl SWIFT LT with its adjustable color temperature feature, which the Petzl lacks. However, it's less durable than the Fenix HM50R v2, which has an IP68 rating and more robust aluminum construction, and it doesn't offer the reactive lighting technology of the Petzl SWIFT LT.

Sofirn HS21

The Sofirn HS21 distinguishes itself with its gesture sensor for hands-free operation, a feature not found in the Nitecore NU25 400 UL or Silva Trail Runner Free H. However, it's less bright than the Fenix HM50R v2, which offers 700 lumens, and lacks the straightforward operation of the Petzl SWIFT LT.

Specs side-by-side

SpecNitecore NU27 600Sofirn HS21
Weight1.98 oz87g (without battery), 168.53g (with battery/headband)
Lumens600 lumensUp to 2,300 lm
Beam Distance134 yardsUp to 230 m
Waterproof RatingIP66IP65
Battery850mAh LiPO1*18650 3.7V Li-ion
ChargingUSB-CUSB-C
Modes6Spotlight, Floodlight, S+F, Red
LED TypeNiteLab MCT UHE LEDsSpotlight (1*Luminus SFT40), Floodlight (6*CSP1919), Red (3*HFL1-R)
← See the full ranking of best rechargeable headlamps