Description The Watch Dev Kit v1.1 is a smartwatch-style development kit for the M5Core series. It combines a watch strap base, M5-Bus board, and 700mAh lithium battery so developers can turn a compatible Core controller into a wearable prototype. Designed for Basic, Core2, and CoreS3 projects, the Watch Dev Kit supports quick wearable experiments, UI testing, mobile sensor demos, and smart device concepts. The orange strap gives the prototype a finished wrist-worn form while keeping the electronics accessible for development. Note: This product is compatible with Basic, Core2, and CoreS3. When used with Core2, it can be secured with two M3x18 cup head screws. Features Compatible with Basic, Core2, and CoreS3 controllers. Includes a 700mAh lithium battery for wearable prototype power. Watch strap base provides a wrist-mounted structure for M5Core projects. M5-Bus board supports connection between the controller and watch base. Watch Dev Kit package includes mounting screws, pins, tools, and battery hardware. Specifications Type Smartwatch-style development kit for M5Core series controllers Battery capacity 700mAh Base size and weight 54.3 x 54.3 x 7 mm / 25.0 g Strap size and weight 260 x 22 mm / 18.0 g Kit dimensions 54.3 x 54.3 x 7 mm Package size 125 x 67 x 23 mm Kit weight 57.0 g Package weight 108.0 g Applications Smartwatch and wearable controller prototypes. Mobile UI testing with Basic, Core2, or CoreS3. Portable IoT demos and sensor display projects. Education or maker projects where the Watch Dev Kit provides a ready wrist-mounted base. Product List 1 x Watch strap base 1 x M5-Bus board 1 x 700mAh battery 2 x Telescopic pins 2 x M3x15 screws 2 x M3x16 screws 2 x M2x5 screws 2 x Hex wrenches 1 x Disassembly screwdriver Other Content Before assembly, check the selected Core controller and screw positions. Route the battery cable carefully, keep it clear of mounting pressure points, and confirm the strap base is fixed before using the wearable prototype on the wrist. Resources Documentation FAQ Which controllers are compatible? The kit is compatible with Basic, Core2, and CoreS3 controllers. Does the kit include a battery? Yes. The Watch Dev Kit includes a 700mAh battery. Is the Core controller included? No. This kit provides the watch base, battery, M5-Bus board, screws, pins, and tools for use with a compatible Core controller.