OnePlus Watch 3 has been spotted on the TUV Rheinland database as well, and this one reveals its battery capacity. The model number hasn't been mentioned but the listing says OnePlus as the company's name and the product specified is a watch. According to this listing, the OnePlus Wach 3 will pack a 500mAh battery. This is the same battery capacity as the OnePlus Watch 2, which is also claimed to offer up to 100 hours of battery life.
There isn't much that has been revealed about the OnePlus Watch 3. It's speculated that the new OnePlus wearable will be powered by the Qualcomm Snapdragon Wear W5 SoC but this could be the W5 Gen 2 that is yet to be revealed by Qualcomm.
OnePlus Watch 3 might launch later than expected according to a recent leak. Tipster Digital Chat Station says that the launch of the OnePlus Pad 2, OnePlus Buds 3 new colour option, OnePlus Watch 3, OPPO Pad 3, and OPPO Enco X3 TWS have been delayed.