One set and one backup set for Streamlight: EURO Approved ATEX Stylus, EURO Approved ATEX Stylus Reach, Stylus, Stylus IR, Stylus UV, Stylus Reach, Stylus Reach 18, and Stylus Realtree Hardwoods.

• 6 High-quality, long-lasting AAAA alkaline batteries
• 1.5V per battery
• Powers anything that takes AAAA batteries
• Will work with a variety of Streamlight Stylus pen lights (see description)
• Two trios of AAAA batteries; use one set and keep the other as a backup!

6 High-quality, long-lasting AAAA alkaline batteriesEnergizer