- Bass, Middle and Treble control knobs- Phase switch- Pre-wired Fishman Sonicore pickup for solder-free, plug and play installation- Battery Life: 88 hours- Brilliance control for additional tone shaping- With phase and tuner function.- LED for battery check, replace battery when Batt lights.- Powered by a 9V battery (not include the battery).Package Included:1 set of 4 Band EQ EqualizerOur products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don"t hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy itOur products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''t hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it