[Retracted] Internet+ and Smart Wearable Devices for Three-Dimensional Monitoring of Tennis Physical Exercise

Table 1

Smart bracelet and ordinary pedometer difference.

Parameters	Smart bracelet	Ordinary pedometer
Material	Medical nontoxic, rubber	ABS
Sensors	Three-dimensional forces	Two-dimensional forces
Sleep monitoring	Yes	No
Data transfer	Low-power Bluetooth 4.0	USB
Waterproof	Life waterproof 100m	No
Fatigue alert	Yes	No
Lithium battery	Rechargeable	Nonrechargeable