The Duracell Procell CR2 battery has guaranteed up to 7 years of storage so you can be confident these batteries will be ready when you need them. This set contains Nikon Coolshot 20i Giii Rangefinder with 6x Magnification and Lightweight Design, Limited 5-Year Warranty, Duracell ProCell CR2 Versatile Long Life and Durable 800 mAh Lithium Battery (3-Pack), 5 x Nikon Ngt-1-wht Durable Hardwood Construction Golf Tees with and Ball Marker (Bright Yellow), and Ball Marker.