The O305 Open Source Smart Pocket is a compact, white handheld gaming console designed for retro and indie game enthusiasts. Featuring a 3.5-inch IPS touchscreen display, dual analog thumbsticks, a full D-pad, and four action buttons (A/B/X/Y), it offers precise controls in a palm-sized form factor. The device runs on open-source firmware, supporting emulation of classic systems including Game Boy, NES, SNES, Genesis, and PSP, with microSD card expansion for ROM storage. Its minimalist white ABS plastic chassis provides lightweight durability, while the ergonomic layout ensures comfortable extended play sessions. Included accessories include a USB-C charging cable and a concise user manual. Ideal for portable gaming on-the-go, travel, or casual retro gaming at home. The console emphasizes accessibility and community-driven development, appealing to hobbyists and nostalgic gamers alike. Power efficiency allows 4–6 hours of gameplay per charge, and the screen features anti-glare coating for better visibility in varied lighting. No built-in games—users load their own legally obtained ROMs.