FEATURE: 1.Solar energy needed only, low consumption, long operating time 2.Can float on the water with water-proof function. 3.Wonderful visible scene of decorative purpose at night with super brightness. 4. Can be connected together as a whole for a signal or lighting system on coast line. 5.Hard ABS plastic structure for preventing breaking. 6.Automatically being recharged on day and giving light at night. 7.Life-span of LEDs is 100, 000H. Will improving apsects: 1. Battery-replaceable function for a long life up to 8-10 years. 2. Lengthen the time of lighting up.