Feature: 1. SOUND QUALITY ENHANCEMENT: Use this pickup to enhance the sound quality of your violin, there will be no noise, allowing a perfect show. 2. PASSIVE TONE: With this pickup with passive tone system, you can unleash your violin sound perfectly for the best performance. 3. STANDARD JACK: The pickup has standard 6.35mm output and 3.5mm headphone jack, easy for connection. 4. PREMIUM MATERIALS: The pickup is composed of premium plastic and metal materials, ensure excellent performance of the violin, with great stability. 5. EASY CARRYING: The pickup is easy to install on your violin, compact in size, easy to carry, you can take around wherever you are. Specification: Item Type: Violin Pickup Set Material: Plastic, Metal Colour: Black Battery: 1 x 9V battery (delivery without battery) Tone Control: ±12dB Features: Passive Frequency Response: 20Hz-20KHz. Package List: 1 x Battery Box1 x Violin Pickup1 x Pickup Strip1 x Black Long Accessory1 x Gasket2 x Coil14 x Screw1 x Hole Piece