Ezviz HP4 Wi-Fi Doorbell + 4.3″Display, 1/3″ Progressive Scan CMOS, 2.0mm @F2.2, visual angle (diagonal)155°, H.265, 15fps, 1920 x 1080, Two-way talk, IR up to 3m, 4600 mAh battery, micro SD (max. 512 GB), indoor.