Check the listing for details. Lumenok Signature Nock,Green, 1 Count (Pack of 3) Green. Color: Green, Condition: New. Listed at 44.18 USD. Lumenok Signature Nock,Green, 1 Count (Pack of 3) ✓ Free 60 Day Returns ✓ Free Express Shipping Description: 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. Features: The Lumenok is a Green lighted arrow nock used for shot placement recognition & arrow retrieval.Lumenok Signature (SL1) lighted arrow nock fits .245" ID carbon and aluminum shaftsEach Lumenok is equipped with a replaceable battery (Lumenok part # RB).Replaceable Battery - The patented Polymeric battery holder allows for battery replacement and protection against failure due to hard impacts!Fits .245" ID carbon and aluminum shaftsShot placement recognition and arrow retrievalEasily replaceable batteryThree green nocks Product Details: Manufacturer: ‎LumenokPart Number: ‎47113Item Weight: ‎0.8 ouncesProduct Dimensions: ‎5.25 x 3 x 0.25 inchesItem model number: ‎SL3GBatteries: ‎1 Lithium Metal batteries required. (included)Is Discontinued By Manufacturer: ‎NoSize: ‎1 Count (Pack of 3)Color: ‎GreenMaterial: ‎PlasticItem Package Quantity: ‎1Batteries Included?: ‎YesBatteries Required?: ‎YesAverage Battery Life: ‎40 HoursDate First Available: July 16, 2011