Product Main material: glass Voltage: 220V-240V Cable length: 0.9 m Optional power: 100W / 200W / 25W / 300W Length: 20 cm / 23.5 cm / 18 cm / 30 cm Suitable for: 220 L / 270 L / 195 L / 305 L aquarium Quantity: 1 piece Package content: Aquarium heating rod * 1 1. High quality electrical resistance wire uniform heating, durable and long service life. Double layer waterproof insulation, can control the water temperature, easy to adjust and read the temperature. Highly resistant heating wire, double waterproof protection, long service life. 2. When the water temperature reaches the specified temperature , the power indicator will turn off automatically. Equipped with 2 powerful suction cups, strengthen the heating rod to prevent it from falling. 3. LED projector with 1000 layers and a resolution of 320 x 240 P supports 1080 P.HD images become clearer with a contrast ratio of 1000: 1. High resolution, clear and bright images ensure excellent viewing quality and lifelike images. 4. Multiple interfaces including HDMI, USB, TF card slots, etc And it can be connected to any digital device. With built-in speaker, no need to connect external speakers, the infrared remote control lets you enjoy the good life that wireless gives you. 5. The lamp has a lifespan of up to 30,000 hours and a lifespan of more than ten years.