As we announced, our flagship for this year, Ulefone Gemini Pro packs a 3680mAh big battery as power source. This face value sounds nice but will it for your the juice for one day use. Please have a look at the video below which shows a heavy drainage test we made lately. The test was composed of 5 projects, most of which are energy-hungry, lasting 4 hours in total. After 1-hour online video playback, 1-hour online music, 30-minute Wechat video call, 30-minute FHD video recording, and 1-hour gaming, Ulefone Gemini Pro consumed only 64% of the battery life. That means heavy use for one day is out of question. This test also proves that we have made great progress in energy efficiency management, given that the device has a deca-core 2.6GHz CPU, alias Helio X27.