Different appearance and different functions.
1. Different appearance: Xiaotianzi phone watch d2a adopts cartoon image design, which is more suitable for younger children, while q2a adopts simple design style, which is more suitable for older children.
2. Different functions: Little Genius Phone Watch d2a is mainly focused on early education and enlightenment, with multiple functions such as mathematics, English, music, poetry, science, etc., while q2a focuses on language learning and the improvement of reading ability. , with functions such as Chinese and English reading, writing, and speech recognition.