The Lumenok is activated upon the shot and relies upon the conductivity of the shaft. NO switches or magnets required. The Lumenok is made using a Signature nock from Bohning. The Lumenok is designed to be used over and over to allow archers to follow the path of their arrows. Each Lumenok has easily replaceable batteries.

Three green nocks. Easily replaceable battery. Shot placement recognition and arrow retrieval. Fits .246" ID shafts. Replaceable Battery - The patented Polymeric battery holder allows for battery replacement and protection against failure due to hard impacts!. Each Lumenok is equipped with a replaceable battery (Lumenok part # RB). Lumenok Signature (GT1) lighted arrow nock fits .246" ID carbon and aluminum shafts. The Lumenok is a Green lighted arrow nock used for shot placement recognition & arrow retrieval.

Date First Available: May 24, 2011. Best Sellers Rank: #286,828 in Sports & Outdoors. Customer Reviews: 4.3 out of 5 stars 194 ratings 4.3 out of 5 stars. : B002L99PVS. Hand Orientation: ?Left/Right. Sport Type: ?Fishing. Size: ?GT. Part Number: ?47117. Manufacturer: ?Lumenok. Color: ?Green. Brand Name: ?Lumenok. Item Weight: ?0.04 Pounds. Item Dimensions LxWxH: ?5.25 x 3 x 1 inches. Package Weight: ?0.02 Kilograms. Item Package Dimensions L x W x H: ?6.69 x 3.46 x 0.55 inches.