Full set with shell, can be used after connecting the key Both automatic and hand keys can be used The volume of the earphone and key control interface has been attenuated to the appropriate volume Size:120x88x35mm Tone:200Hz-2500Hz, built-in 4Ω5W 3-inch speaker, dustproof cloth, loud sound Note:The key is not included in the delivery The product appearance and printed words may vary depending on the batch, but this does not affect use. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Voltage:AC110V Colour:As Shown Material:aluminum wire drawing Package Contents: 1 * CW Morse Code Trainer 1 * ADAPTER Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.