Features: 1. NO GLUE, NO STICKING REQUIRED: The piano note strip is made of silicone and connects in series, eliminating the need to adhere to 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, compatible with standard piano sheet music notation. 3. BEGINNER FRIENDLY: No prior knowledge of key names or Middle C location is needed. Simply place the note strips on the piano keyboard for immediate use. 4. REMOVABLE AND REUSABLE: Can be removed when you become familiar with the keyboard layout and reinstalled if needed. 5. FITS 88-KEY INSTRUMENTS: Designed for full-size 88-key pianos. Compatible with acoustic grand pianos, upright pianos, and 88-key digital pianos or keyboards. Specifications: Material: Silicone Color: Black & White, Colorful Package Dimensions: 16.5 x 8 x 1.5 cm Package Weight: 120 g Included: 1 x Piano Notes Guide