Size Guide

This is our "go to" light for on the go charging of all colors of Lume, small portable and easily rechargeable.


  • NiteCore Tube is a lightweight, compact ultraviolet key chain light. It is also rechargeable with built-in rechargeable battery and micro-USB charging port. Use it for charging up LUME or verifying currency or identification documents or have it on hand to make sure your hotel room is clean - this tool is versatile in so many ways! Great for law enforcement, security, bar and wait staff, private investigation and more.


    • Featherweight and handy design
    • Good for money, identity cards detection, verification mark reading and fluorescence activation
    • Featuring 500mW power, 365nm wavelength ultraviolet LED
    • Integrated intelligent Li-ion battery charging circuit (micro-USB charging port)
    • Built-in rechargeable Li-ion battery provides a runtime of up to 1 hour
    • Single switch offers easy one-handed control
    • Constructed from durable Polycarbonate materials
    • Dual metal key ring connector withstands up to 77lbs (35 kg)
    • Impact resistant to 1.5 meters


    • Runtime: 1 hour
    • Dimensions: 2.22” x 0.83” x 0.31” (56.5mm x 21mm x 8mm)
    • Weight: 0.34oz (9.6 gram)(with battery)

    Content in Package: Tube keychain light

    Note: The manufacture package does not include a charging wire (Micro USB to USB, similar to the one used in most smartphones). It is supplied as an accessory option.

Collections: NITECORE Flashlights

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Sizing Information

Ring Sizing

It's EXTREMELY important to get sized correctly as MOST of our rings cannot be sized down!  We now offer a sizing set that you can and probably should order with your ring.  Once you place the order a sizing set is shipped out ahead of time to confirm all sizing, simply reply to the checkout email or send one directly to  

Click Here to add a Ring Sizer

Wider bands will generally fit a bit more snug so for example; currently you wear a size 9 and the band you have now is 4mm wide, you want to get an 10mm wide band, you may find a 9.25 or 9.5 to be a better fit in a 9mm or larger band.  Luckily they can be sized up about a half size at no charge, just cover return shipping.  
Most bands unfortunately CANNOT be sized down.  If you need help deciding the best size, I suggest you visit a local jeweler for sizing then email me and we can get the best size for you in the width you want.

Soap Sizes Vary, Pricing based on weight.

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