Features:The main body is made of high quality rosewood material, and the sounding bars with aluminum, durable and solid enough for long time use, delicate workmanship. The small body is very convenient to carry and store. Very ideal musical instrument for children do training and cultivate your child's interest. Multiple benefits it can bring to your child: emotional, sensory and intellectual development hands-on ability enhancing hand-eye coordination creativity growing etc. Also can strengthen parent-child relationship and promote parent-child communication through the long term use. Easy to use, with 5/6 keys for you to choose to come to your satisfaction. Specification:Material: Rosewood+Aluminum Color: Red(5 Keys), Brown(6 Keys) Type Option: 5 Keys, 6 Keys5 Keys Size: Approx. 10x7x2cm/3.9x2.7x0.7inch 6 Keys Size: Approx. 11x9x2cm/4.3x3.54x0.78inch Weight: Approx. 180g(5 Keys), 274g(6 Keys)Packing List:1 x 5/6 Keys Thumb PianoNote: How to use: Hold the main body by two hands, and then use two thumbs to play with it. When the thumb presses and releases the piano, the slice will make sounds. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.