What it is
The Olight Gel Pen Refills for O'Pen 3 and O'Pen Glow, 0.7mm, 3 Pack sits in Olight's edc flat lights line. Like the rest of the range it charges over Olight's magnetic system, so there are no loose ports to wear out.
Not sure how the output compares, or which Olight is right for you? The lumens guide explains what the numbers actually mean in the field, and how to choose an Olight walks through picking a model. Every Olight is covered by the brand warranty - see warranty & service.