Features: It features intelligently sense. It will automatically change the color to remind you,so as to increase the fish rate. No need to check the floats at all times. The light is bright but not glare for slowing down the fatigue. Note: Actual color may be slightly different from the image due to different monitor and light effect. Specification: Applicable scene: night fishing Category: vertical drift Material: nano material BS901:For water depth 1-3m, For rod length 4.5-5.4m, Total length 43cm, Float tail 7 BS902:For water depth 1-3m, For rod length 3.6-5.4m, Total length 44cm, Float tail 7 BS903:For water depth 1-3m, For rod length 3.6-5.4m, Total length 43.5cm, Float tail 9 BS904:For water depth 1-3m, For rod length 3.6-5.4m, Total length 42cm, Float tail 9 BS911:For water depth 1-4m, For rod length 3.6-5.4m, Total length 39.5cm, Float tail 7 BS912:For water depth 2-5m, For rod length 3.6-5.7m, Total length 44cm, Float tail 7 BS913:For water depth 2-5m, For rod length 3.6-5.4m, Total length 45.5cm, Float tail 7 Green:For water depth 2-6m, Total length 47cm, Float tail 9 Yellow:For water depth 1.5-4m, Total length 45.5cm, Float tail 9