My First Post 
I Got the trial qualification of Lumintop Worm 4.0 (The 4th Generation) as staff. I had it played on hand for a week.In generally, Worm 4.0 have a great improvement on the twist hand feeling to turn on/off or switch modes with silicone ring around the head. This is worthy of recognition at this point for lumintop keep improved their products. Also with one additional Clip added to increase its practical characteristic as ideal keychain flashlight.
Here is official Worm 4.0 specifications from LUMINTOP website
- Utilizes CREE XP-G2 (R5) LED with 50,000-hour lifetime
- Output mode/Runtime: High: 110 lumens/30 Minutes, Mid(Default): 32 lumens/4 hours, Low: 5 Lumens/36 hours
- 3 modes: Mid(Default)-Low-High
- Max Beam Intensity and Distance: 553cd, 47 meters
- Runs on: 1 x AAA (NOT included) (10440 Not Recommend)
- Dimensions: Head Diameter: 0.55” (14mm); Body Diameter: 0.55” (14mm);
- Wonderful 7 Colors Available
7 Colored Worms (Graphiack, Golden yellow, Violet, Wine red, Sapphire blue, Apple green, Silver) are high strength aerospace Aluminum alloy construction, and with anti-scratching type HAIII military grade hard-anodized finish process. All aluminum Worms are just 2.64” and 0.42oz(12g) - High-efficiency digitally regulated circuit to maintain a constant brightness as battery life diminishes
- Precision micro-textured reflector creates smooth, optimized beam
- Double-side AR coated, tempered window resists impact and thermal shock, maximizes light transmission (99% light transmittance)
- Glow-in-the-Dark front O-ring around reflector will give you a fantastic experience
- Simply rotate the head to easy access to all functions
- Capable of standing up securely on a flat surface to serve as a candle
- Impact resistance to 1.5 meters and waterproof in accordance with IPX-8 (submersible to 2 meters)
- Market applications include, but are not limited to everyday, keychain, gift, hardware/tool and many other uses
- Operation: Easily twist the head to turn on/off and tighten/loose the head to change modes (Mid-Low-High)
I am a line
I got a complete set of worm which includes
1 x Worm
1x Key-ring
2x O ring
It packed in a clear simple plastic box with outside Black sleeve.
Design
The whole body just like a worm so that why “Worm”, isn’t that cute
It is matt finish but I like the gloss on the surface very much.
Then Let’s take more close look on the worm. There is a simple design stainless steel clip and looks firm.
I am try to disassembled the clip but it has glue fixed.Then I got the other one without glue and take apart them. The clip inside is very simple too. The clip seems use simple principle of the physical to work (use Different direction of the force ??) . Clever way
And the Glow-in-the-Dark anti –slip ring is removeable
OP reflector and CREE XPG2 R5 LED
Glow-in-the-Dark front O-ring
Compared to AAA Flashlight, from left to right:
Lumintop Copper Tool AAA, Tool Ti, SS worm. Bronte RA01 maratac AAA and Worm. We can see that the worm size is very compact.
UI User Interface
Lumintop Worm UI is very simple. Just twist the head right or left to turn on/off or switch modes.
The default modes is from mid modes and it will cycle from Mid-Low-High, no memory. With silicone ring on head, it is Ok to change modes with one hand now.
Uses 1 x AAA battery
Runtime test on high modes:
I took some photos to show the brightness in actual usage scenarios:
Worm – Low Mode I*SO200 F3.2 1/2secs*
Worm – Mid Mode ISO200 F3.2 1/2secs
Worm – High Mode ISO200 F3.2 1/2secs
Conclusion:
Lumintop 4th Gen Worm is not a bad Choice as a mini keychain light. The brightness can satisfy daily use and size is small & lite weight enough for everyday carry. It differs from man to man regarding the appearance. 
:partying_face: