1. Slow descent function: Equipped with an imported hydraulic unit, the piano lid ensures a smooth and controlled descent for up to 100,000 cycles. No more sudden drops—enjoy a gentle and seamless close every time. 2. Ultraquiet operation: Featuring an ultraquiet double pulley system, this piano lid descent device delivers a balanced and whisperquiet lowering experience. Say goodbye to jarring noises or abrupt slamming of the piano cover. 3. Easy installation: Installing this device is effortless. Simply remove the protective film from the bottom and adhere it to the designated position. A hassle solution to enhance your piano's safety and performance. 4. UPGRADED FINGER PROTECTION: Utilizing hydraulic technology, this device effectively prevents finger injuries caused by accidental pinching from the heavy piano lid. Keep your loved ones safe while they enjoy the art of piano playing.