Oppo Watch Free supports smartphones running Android 6.0 or iOS 10 and later versions and supports BLE connections.
The smart wearable offers over 100 workout and sports modes including badminton, skiing, cricket, kayaking, and more.
It is waterproof up to 5ATM, and can be used for swimming, according to the company.
Oppo Watch Free also comes with an optical heart rate tracker and SpO2 sensor.
It can automatically detect walking, running, rowing machine, and elliptical machine workouts.
Oppo Watch Free measures 46x29.7x10.6mm and weighs 32.6 grams and 20.9 grams.
Smartwatch will launch alongside Oppo Reno 7 and Oppo Reno 7 Pro that are also scheduled to launch on February 4.
Oppo is yet to reveal the pricing for the upcoming Oppo Watch Free in India.
The smartwatch was launched in Quick Sand Gold and Silent Night Black colour options with a price tag of CNY 599 (roughly Rs. 7,100) in China last September.