Net Weight: 225g
Size: 23.5 x 7.5 x 3.5cm
Three Colors
Its surface finishing make of nickel.
It depends on water pressure to generate electricity, no need for the battery, safe and environment friendly.
The part of inner is full covered of advancing structure to avoid rusting when connecting with waters in a long time.
Three colors (green, blue and red) for decorating and illustrating change of water

temperature:
It can show 3 colors with water changes.
(1) it will show green when the water temperature is below 31?C
(2) it will show blue between 32 ?C to 43?C
(3) it will show red between 44 ?C to 50?C
Note: it will strobe red when the water temperature is over 51?C, be careful burns.