They can help you to play nice sound. It is designed to help you to play the guitar or bass more easily and conveniently, achieving good playing effects. Fine workmanship and durable. It has the humanized design, which conforms to the shape of the fingers. Features - Color: Assorted Color - Material: ABS, button cell - Size 1: About 4.00X4.00X0.30cm/1.57X1.57X0.12in - Size 2: About 6.00X7.20X1.50cm/2.36X2.83X0.59in - Can meet your professional needs, and perfect for collections. Suitable for acoustic, bass and electric guitar plays. - Although the design of this product is very simple, it is so practical when you use it. - These LED guitar picks are light in weight, easy to carry with you, and do not take up space. - The surface is smooth, and the edges are clean to prevent finger injuries and bring you a good practice experience. - Lightweight and portable, easy to carry. Smooth surface, it is not easy to hurt your hands. Package list: 1 x green LED pick 1 x light LED pick