TOOGOO(R) LED Color Flashing Tube Necklace, clear tube, multicolor lights, daisy-chainable Three modes: Running light, flash, random patterns, Push-button operation LED Lights: 2 Blue, 1 Jade, 1 Orange, 2 Red (may vary by batch) Unsnaps to make a rope, Snap together multiple units to daisy-chain Uses 3 replaceable AG-13 batteries (included) Length 22" to 25" (may vary by batch)