Labels Milestones
Back3.5mm Horizontal Waterproof Stereo Headphones Jack, https://www.technik.com.hk/images/pdf_product/WP3002-PA66-A.pdf audio jack stereo horizontal waterproof 6.35mm (1/4 in) Vertical Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling Audio Jack, 2 Poles (Mono / TS *(optional) SIP socket, 2.54 mm, 1x10 | | C7, C12, C13 | 3 | 2N3904 | Small Signal NPN Transistor, TO-92"/>