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  3. T37 vs TK25R

Acebeam T37 vs Fenix TK25R

What T37 does better (4) and where TK25R wins (0) — every spec side by side.

Acebeam T37
Acebeam · 2025T37
8.8Score
4 advantages≈ $130
Higher score
vs
Fenix TK25R
Fenix · 2025TK25R
6.6Score
0 advantages≈ $140
7.8Brightness & throw6.7
6.6Battery & charging5.1
7.8Build & durability5.5
5.9Features5.9

Why is T37 better than TK25R?

  1. Beam distance (ANSI FL1)440 m vs 350 m+26%
  2. Peak beam intensity48,400 cd vs 30,620 cd+58%
  3. Maximum output4,000 lm vs 3,600 lm+11%
  4. Maximum runtime72 h vs 55 h+31%

Why is TK25R better than T37?

TK25R has no measurable advantages in this pair.

Specifications

Side by side

Acebeam T37Acebeam T37≈ $1308.8
Fenix TK25RFenix TK25R≈ $1406.6
Light output
Maximum output4,000 lm3,600 lm
Peak beam intensity48,400 cd30,620 cd
Beam distance (ANSI FL1)440 m350 m
Light sourceLEDLED
LED & beam
LED emitter—Cree XHP50
LED maker—Cree
Colour temperature6,500K5,700K
Battery & charging
Battery21700 Li-ion21700 Li-ion
Maximum runtime72 h55 h
RechargeableYesYes
USB-C chargingYesYes
Battery level indicator—Yes
Build & durability
Protection ratingIP68IP68
Water protection (IPx)IPx8IPx8
Size & weight
Length / height—164 mm
Head diameter / width—36 mm
Body diameter / depth—26.2 mm
Weight—225 g
Modes & features
Brightness levels5—
SwitchTail switch, Rotary / scroll wheelDual switches
StrobeYesYes
Red light—Yes
UV light—Yes
Green / blue / RGB light—Yes
Lockout—Yes
Mode memory—Yes
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