Feature:1. FINE PROCESSING: The key uses silver plated contacts, and the lacquer surface is treated with environmentally friendly matt, with stable performance.2. DURABLE MATERIAL: The key body is made of excellent plate, and the bottom original rubber non slip strip, which has a long service life.3. 3.5MM OUTPUT INTERFACE: The output interface is a 3.5mm dual channel socket, the connection is stable and reliable, and it is easy to install.4. HIGH PERFORMANCE: The automatic paddle keyer is compact and lightweight, with fine processing, has high sensitivity and good reliability.5. FOR RADIO EXPERIMENT: This automatic key is ideal for radio amateurs, for CW Morse or shortwave radio communication experiments.Specification:Item Type: Automatic Paddle KeyMaterial: ABS, excellent plateProduct Size: Approx. 76 x 66 x 40mm / 3 x 2.6 x 1.6in (Excluding the Paddle Protrusion Size)Output Interface: 3.5mm Dual Channel Package List:1 x Automatic KeyNote:There is a protective film on the non slip strip at the bottom of the key body, which can be used after removing it. If the non slip strip is dirty after a period of use, it can be ed with a damp cloth.