The OPPO N1 is equipped with a 5.9 inch screen with resolution of 1080 x 1920, and includes a quad-core 1.7GHz Qualcomm Snapdragon 600 processor under the hood. 2GB of RAM is on board along with 16GB or 32GB of native storage. A 3610mAh battery keeps the lights on, and Android 4.2.2 is pre-installed.
When OPPO first teased us about the phone, it focused on the ability to use the device with one hand, despite its phablet-like size. That is due to the rear touch panel on the N1. Additionally, the 13MP camera uses an "Owl" image chip which is supposed to make pictures look great even if taken under low-light conditions.
Keep in mind that the phone does not offer 4G LTE connectivity, although it can provide 4G speeds using an HSPA+ network from AT&T or T-Mobile.
source: OPPO via Phandroid