RC tech Special Shot Timer is a 3 in 1 multipurpose timer with modes for firearms, airsoft, and stopwatch. Specially made for IPSC, AAPSC, IDPA, 3GUN SPORTS. Enables Bluetooth connection to phone/thablet directly with Practiscore APP. Also optional wireles led score board connection. NOTE: Belt clip is not included and is sold separately.: https://cesar-shop.com/gear-en… USER MANUAL – Download user manual from ATTACHMENTS tab above.