Built-in battery Equipped with a high-capacity 5000mAh built-in battery for long-lasting performance, minimizing the need for frequent charging. Connectivity Connect up to 3 wireless devices via Bluetooth, one with a 2.4G receiver, and one with a USB connection. Use USB and Bluetooth simultaneously for a total of 5 devices. NEWTRO A retro typewriter keyboard that combines nostalgia with cutting-edge technology. Immerse yourself in the charm of "NEWTRO" (New Retro) while enhancing your typing speed and accuracy. Every detail is meticulously designed and produced by FINEDAY. Blue switch keys Experience the ultimate retro keyboard with tactile and clicky blue switches, delivering the classic typewriter "clickety-clackety" feel. Ergonomic Features a 9.22-degree cradling angle for ergonomic comfort. Stow your devices in the integrated stand to type for extended periods without straining your neck. Left lever Crafted from solid aluminum, the lef