Description: 【Product Packaging】: Includes 1 Electric Piano Headphone, 1 Piano Sustain Pedal, and 1 USB cable 【Guitar Pickup Headset】: Drum kit universal headset is suitable for acoustic and electric guitar, meeting the needs of different guitarists. Features soft earcups for comfortable wear and extended use 【3.5mm Audio Interface Pedal】: Electric Piano Sustain Foot Pedal features a rear step design, allowing for freely movement during use and providing more flexible user experience. The 1.8m cable is long enough to accommodate various instruments and placements, making it more convenient to use. Suitable for users of all ages, ensuring comfortable operations 【Foldable Noise Cancelling Headset】: Designed for quiet performance, ensuring you cannot disturb others, especially suitable for apartments or quiet environments. The headset is foldable and retractable for easy storage, saving space and making it convenient for practice anywhere 【Wide Application of Pedal】: This 3.5mm Piano Keyboard Pedal is suitable for various instruments such as electric pianos and drum kits, helping players control sustain or other sound effects, improving playing accuracy and expressiveness Specification: Headphone Specifications:  frequencys range: 20hz-20000hz impedance: 32Ω plug size: standard 3.5mm pin Size Chart: Headphone: 20cmx17cm/7.87inchx6.69inch, wire length 2.0m/78.74inch, wire diameter 3mm/0.12inch Pedal: 7.3cmx3.5cmx9.5cm/2.87inchx1.38inchx3.74inch Package Includes: 1 Electric Piano Headphone 1 Piano Sustain Pedal 1 USB cable Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.