Telescopic window cleaner with water hook-up capability for simultaneous scrubbing and rinsing, includes a water pipe with quick connect and faucet connector for easy access to water anywhere. Made from high-density reinforced aluminum alloy, offering high hardness, rust resistance, and lightweight design; suitable for all users with durable and soft feather bristles for safe surface cleaning. Features a brush head with a pole, designed for exterior glass and solar panel cleaning; includes steel buckle for secure closure, easy installation and disassembly, and a universal design allowing the brush head to rotate freely to reach every corner. Ideal for home panel cleaning, this brush helps maintain rooftop solar panels efficiently, saving time and enabling easy maintenance with control. Extendable window cleaning brush with adjustable lengths, works on all rooftop panels regardless of quantity or distance from the ground, providing versatile cleaning solutions for various needs.