Category Nuances for handheld_devices:

• new,
• portable,
• several,
• simple,
• mobile,
• wireless,
• embedded,
• inexpensive,
• suitable,
• usable,
• smart,
• digital,
• sophisticated,
• wearable,
• everyday,
• diagnostic,
• electronic,
• diverse,
• smaller,
• small,

Simple Categories for handheld_devices:

• implementation,
• system,
• devices,
• equipment,
• artifact,
• hardware,
• device,
• appliance,
• unit,
• instrument,
• gadget,