1.39 Thin Round OLED Display | 400 x 400 Thin OLED Display Super Thin Round OLED Display, 0.67 mm thick, The Best Choice High-End Smart Watches. OEM ODM Wholesale Mini 400 x 400 Super Thin Round OLED Display. In Business Since 2003. Professional Manufacturer. www.kingtechlcd.com/OLED_Display/Round_Display 1.39 Thin Round OLED Display | 400 x 400 Thin OLED Display Super Thin Round OLED Display, 0.67 mm thick, The Best Choice High-End Smart Watches. OEM ODM Wholesale Mini 400 x 400 Super Thin Round OLED Display. www.kingtechlcd.com/OLED_Display/Round_Display |