About this product: No need for additional power or battery, the water flow can provide power flow for LED lighting. The light circle of the light-emitting diode indicates the blue, green or red light color according to the corresponding water temperature range (0 ~ 29 : blue; 30 ~ 41 : green ;>41: red); People can relieve pressure and eliminate fatigue by color conversion. The color changes depending on the temperature of the water passing through it. Made of ABS and TPR, eco-friendly, safe and durable for long term use. Multi-layer plating treatment ensures corrosion resistance and smooth surface. energy saving, environmental protection. A great replacement for shower head sprayer, easy to install. The shower head handle plugs directly into your shower hose. Product Description: 1. No need for additional power or battery, the shower head spray Water can provide a burst of energy for LED lighting. 2.LED light circle shows blue, green or red light color depending on the corresponding water temperature range (0~29: blue; 30~41: green; >41: red); People can relieve pressure and eliminate fatigue by color conversion. 3.Color changes depending on the temperature of the water passing through it. Made of ABS and TPR, eco-friendly, safe and durable for long term use. 4.4.Multi-layer plating processing ensure resistance to corrosion and smooth surface. energy saving, environmental protection. 5.A great home bathroom shower head sprayer replacement, easy to install. The shower head handle connects directly to your shower hose. Features: Condition: 100% brand new. Material: ABS. Color: Black. Male thread: G1 / 2. LED Power: Hydroelectric generation (no need for extra battery). Light Color: Blue (0 ~ 29 ); Green (30~41); Red (> 41). Size (H x W): approx. 24 x 12.5 cm / 9.45 x 4.92 inch. Weight: Approx. 210g. Package Included: 1 x Hand Shower. Note: 1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the