S311T Isotope Tandem Tritium Fob

Marsoni

M251S

$22.95

Get it in 3 business days with 1 day shipping. Friday, May 29

S311T Isotope Tandem Tritium FobTritium vial is included please select from the tritium colour choices The TEC S311T Isotope Fob is a keychain fob specifically designed to hold a standard 3mm x 11mm self luminous tritium vial. Tritium vials come in a variety of colors, and will glow for many years without requiring any type of "charging" from sunlight. This version of Isotope fob is very similar to our longer TEC S323 and TEC S360 fobs, however it is shorter in length and has split

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Fast: 2-3 business days
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I was very surprised with how expensive this felt and looked while still being affordable. It has several levels and kept my coffee hot. I love my coffee really hot and this kept it there for hours. Word of advice not all coffee cups will work it needs to be all ceramic or glass and cup handle will get hot.

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Reviewed in the United States on May 17, 2026

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Timothy Mousseau

Chelsea, US

★★★★★ 5

Neat gadget

Color: Gold

Neat little gadget. Works great, easy to use and has a light indicator for temperature range. Keeps a cup of liquid hot right to the bottom.

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Reviewed in the United States on May 29, 2026

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Ctg1363

Battle Creek, US

★★★★★ 5

My tea stays warm to the bottom of the cup!!!

I am so glad I purchased this mug water. I drink tea all day but it cools down quickly. Since I purchased this mug warmer my tea stays hot to the bottom of the cup. The temperature is adjustable so you can keep your drink at your desired temperature. The top is glass and wipes clean easily. I like the rubber gasket that fits on top of the warmer. It keeps your mug in the center of the warmer and should you have a spill it catches the liquid. I've been using it every day for over a month now and it's going strong and is reliable. Perfect for personal use or as a gift.

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Reviewed in the United States on May 2, 2026

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Sarah Akin

Whiting, US

★★★★★ 5

Keeps my coffee as hot as I want it to be

Color: Silver

This coffee warmer is much better than the candle warmer that I was using for my coffee before. With a range of 3 temperatures, I have a choice of temperatures from hot to very, very hot, and the warmer shuts itself off after a while, just in case I forget. The description advises that ceramic cups do not retain heat as well as flat-bottomed cups, but I have not found that to be a problem. Coffee in my ceramic mug stays as hot as I want it to be. The knob on the side makes this warmer easy to turn on and to select a temperature, plus I feel that it is a good value.

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Reviewed in the United States on February 11, 2026

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Cecilia Tosh

West Palm Beach, US

★★★★★ 5

Perfect Mug Warmer

Color: Black

I bought this to replace one I'd had for more than 25 years & I'm glad I got this one. Keeps my hot drinks hot for hours & will shut off after that. Quickly heats back up when needed. Very sleek looking. Easy to set up. Just take it out of the box & plug it in.

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Reviewed in the United States on February 12, 2026