Item Type: Guitar PickMaterial: ABSColour: GreyBattery: 2 x button battery CR1620, delivered with matching battery. Battery Capacity: 70mAhNote: A battery is installed inside the product. 1Pretty Lighting: Powered by battery, the guitar pick enables pretty lighting on the stage, largely improving your performance. 2Smart Plucking: Easier for guitar string plucking, the guitar pick can also play a warm and round tone, very fair sounding. 3Great Material: Adopting premium ABS material, which allows for better hand feel and more enjoyment in the guitar playing. 4Practical Uses: Suits perfectly for varied instruments, including bass, folk guitar, electric guitar, acoustic guitar, etc. 5Including 2Pcs: There are 2pcs guitar pick in the set, so the changing and replacement will be much easier for a long time.