Features: 1. NO GLUE, NO STICKING REQUIRED: The piano note strip is made of silicone and connects in series, so there is no need to adhere to the keys like traditional piano stickers. Easy to install and remove without leaving residue, keeping your keyboard clean. 2. DOUBLE STAFF DISPLAY: Displays each key's note on both treble and bass staves, helping users quickly locate the correct key, matching standard piano sheet music notation. 3. BEGINNER FRIENDLY: No prior knowledge of key names or Middle C location is needed. Simply place the strips on the keyboard for instant note reference. 4. REMOVABLE AND REUSABLE: Can be removed when you become familiar with the keyboard layout and reinstalled later if needed. 5. FITS 88-KEY FULL-SIZE KEYBOARDS: Compatible with standard 88-key pianos, including grand pianos, upright pianos, and digital pianos. Specification: Material: Silicone Product Color: Black & White, Colorful Package Size: 16.5 x 8 x 1.5 cm Package Weight: 120 g Package Included: 1 x Piano Notes Guide