Core 638 Valkyrie Certification by Factory & Lab:

Certification by Factory & Lab: Wavelength Measurement

Ultra (40)

Material: Bronze Alloy + Non-Tarnishing Brass

7V (Case Positive)

and should be treated with caution and care

Core 638 Valkyrie Certification by Factory & Lab:Features & Specs: Output: 1,600 Wavelength: 638nm Color: Red Adjustability: Focusable Threaded Lens Switch: On Off Material: Aluminum Please read each section below carefully if you intend to purchase this item. This is not a toy, and should be treated with extreme caution and care. DO NOT POINT AT, AROUND, OR NEAR EYES. MAY CAUSE SEVERE EYE DAMAGE IF MISUSED. Warnings Battery & Charging Safety Refund Policy Use common sense when handling this item,