Stopwatt cleans the electricity in your home and reduces unnecessary energy consumption. Stopwatt helps maintain voltage, synchronize current, and supports energy savings. The design is advanced, but no technical knowledge is required for operation. Improves equipment performance and reduces electrical interference. Stopwatt helps protect electronic devices, enhances audio and video signal clarity, minimizes wireless communication interference, and increases the reliability of electrical systems. Supports comfortable living by helping reduce electricity costs without limiting the use of essential appliances such as refrigerators, fans, or air conditioners. Use all necessary devices while improving energy efficiency. Easy to use: simply plug the device into a wall socket. The green indicator light turns on automatically. No special maintenance or attention required. Helps improve power utilization and reduce wasted electricity. Suitable for homes, shops, restaurants, offices, and small factories. Compatible with air conditioners, washing machines, refrigerators, electric fans, pumps, stereos, fluorescent lights, and other common electrical devices. Plug Type: US Plug (compatible with countries including Canada, Mexico, Thailand, Taiwan, the Philippines, and others) Voltage: AC 110V Color: White Material: Plastic Package Contents: 5 x Stopwatt Energy Saver Note: Light reflection and display differences may cause slight color variation between the image and the actual item. Measurement may vary by +/- 1-3 cm.