According to Reuters, Samsung says they have shipped over 800,000 Galaxy Gear smartwatches since September. This numbers are probably shipment to retailers and not actual sales. In addition, most Gear watches are sold bundled to Galaxy Note 3 phones (some operators offer them free of charge if you join a certain plan). In any case, Samsung believes the Gear is now the "most sold wearable watch available in the marketplace".
According to Business Korea, Samsung sold less than 50,000 Gear watches in Korea which is far below their initial industry expectations. The Galaxy Gear, Samsung's first smartwatch, features a 1.63" 320x320 (275 PPI) Super AMOLED display, a 1.9 mp camera (720p videos), 800Mhz processor, 4GB of storage, 512MB of RAM, Bluetooth 4, and a 315 mAh non-removeable battery.
Business Korea also reports that Samsung is only selling about 100 Galaxy Round phones each day. But I didn't really expect Samsung to sell a lot of these phones though - it's a very expensive phone (over $1,000) that Samsung only sells in South Korea. In addition it is not clear to consumers why they should opt for a curved phone (even though experts say the curved display is terrific).
Interestingly, the report quotes an "industry representative" that thinks Samsung's major problem is that they were not able to mass produce curved batteries. This resulted in a thick center in the Galaxy Round watch. LG Chem did manage to produce such batteries, and they are used in the LG G Flex phone.