PRIVATE BRAND UNBRANDED 350 Lumens Dual-Power Penlight 3.7-Volt 700 mAh Rechargeable Replacement Battery HSKYPENBATT700M - The Home Depot
Amazon.com: FITA Medical Pen Lights for Nurses Doctors, 2 Pack Reusable Penlight LED Tactical White Light with Pupil Gauge and Ruler, Replaceable Batteries : Industrial & Scientific
LED UV Penlight (Batteries not included) - accuspire