An alternative to the traditional GLOW Cup Rings and an easy way to quickly identify the Cup. Each LED cup ring has 3 modes of operation - steady, fast/slow flash. They are battery operated and will have approximately 9 hours of usage time. Just insert into Cup either as a "bracelet" or use in "open" position and start the flash. Batteries included and installed. Just perfect for 9 holes. Our L.E.D. light up glow cup rings are sold 9 to pack. Please order in increments of 1 pack.