Product information product does not have battery! it works by connecting to the electrical installation. width: 15 cm height: 55 cme-27 socket. e-14 can be made upon request. the products are domestic production. our products are 1. quality products. product color: antique coated. easy to clean, simple to install. note: amplifier is not shipped. if you can create a missing item request instead of returning it, we can send you the problem part. more than 100 stocks are available for sale at the campaign price. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.