Air Drum Set Portable Virtual Reality 3D Motion Sensing Electric Air Drum Sticks with Pedals Speaker for Indoor Outdoor Item Type: Air Drum Set Material: ABS Drumstick Battery Type: Li Battery (Built in) Single Drumstick Battery Capacity: 300mah Foot Pedal Battery Type: Li Battery (Built in) Single Pedal Battery Capacity: 180mah Sound Battery Type: Li Battery (Built in) Sound Battery Type: 1000mah Small Memory Card: ExcludedDrumstick Size: Approx. 300x16x10mm / 11.81x0.63x0.39in Pedal Size: Approx. 40x40x18mm / 1.57x1.57x0.71in Speaker Size: Approx. 77x77x40mm / 3.03x3.03x1.57in