ThruNite Ti4 Penlight

Always have the light you need when you need it, with this compact and lightweight “penlight” style LED flashlight

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Product Description


ThruNite Ti4

Batteries and charger not included

Product Description
  • Due to thoughtful design, the Ti4 always starts in Firefly mode—ideal for tasks like dentists using it as an endoscope.
  • The anodized aircraft-grade aluminum body is easy on the skin, feels good in the hand, and looks fashionable to carry.
  • The Ti4 is dependable and bright, with a max regulated runtime for 137 hours and a max output of 252 lumens.
  • Outstanding construction gives the Ti4 the durability to meet the IPX-8 waterproof standard.
  • LED: Cree XP-G2 LED with a lifespan of 20+ years of run time
  • Mode & Runtime (Tested with 2*Ni-MH/900mAh)
  • -Firefly(0.3 lumens, 137hours)
  • -Low (24 lumens, 12hours)
  • -High (252 lumens, 51minutes)
  • -Strobe (252 lumens, 90 minutes)
  • Working voltage: 0.9-3 V
  • Battery: 2xAAA Batteries(not included)
  • Peak Beam Intensity: 1120 cd
  • Beam Distance: 67 m
  • Waterproof: IPX-8
  • Impact Resistance: 2 m
  • Material: Aircraft grade aluminum body structure with premium type III hard anodized anti-abrasive finish
  • Weight: 22.3 g (without battery)
  • Dimension: 132.9 x 14.2 mm
  • Accessories:2x spare o-ring
  • Battery Installation: Unscrew the light head, insert the batteries with the negative terminal down into the battery tube and then screw the light head back on.
  • Turn on /off: Single press the tail switch to turn the light on/off.
  • Change modes:
  • When the light is on, half press the tail switch (without hearing the “click” sound) to cycle through Firefly, Low, High, Firefly, Low, High, and Strobe.
  • When the light is on, quick double click (within 1 second) the tail switch to cycle through Firefly, Low, High, Firefly, Low, High, and Strobe.
  • If the second click is after 1 second but less than 10 seconds, the light will memorize the last mode. If it is after 10 seconds, the light will start from Firefly mode again.
  • Short Memory function
  • The light will turn on in the last mode accessed within a 1-10 seconds interval, except for Strobe.

Additional Information

Additional Information

Manufacturer ThruNite
Max lumens 201-450
LED Type XP-G2


Performance as expectedReview by Antony
I've been looking for a while for a penlight suitable for medical applications - most models come on far too bright and are therefore uncomfortable for the patient when examining the eyes.

The default 'firefly' mode which comes on at the dimmest setting on this torch is fantastic and allows for patient comfort, whilst also making available brighter settings easily if used as a more conventional 'torch' (eg. outside, around the house).

The only comparable torch I've found for this use is the Welch Allen torch, which is more expensive and does not perform any better, except having a switch that is harder to accidentally turn on in a pocket or briefcase (the ThruNite occasionally may be accidentally turned on in my bag).

However, very happy for the price that this is the torch that suits. Highly recommended. (Posted on 21/08/2017)

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