Mi Action Camera 4k30 Xiaomi ,3 battery, cover ,extra lens variable 3.6-11mm is special lens F1.6 for matrix 1/1.8 8.0 mp 4k resolution (regular variable lens has only 3mp) It is MIjia 4k30 ,never overheat after 40-50 min ,as go pro dji action and other cameras. Inside big heat sink,so work until battery drain. Can work with ,variable lens (for who can off front bezel and original lens, for me easy).Camera has s.fine mode with 100mb/sec bitrate (UHS-1 microsd up to 256gb ) F-log, 3 battery, can record 4k30 more than 90 min each battery, rubber holster, in excellent condition.Variable lens with optical zoom 3.6-11mm wih infrared filter inside ready ,Used only 5 times on the tripod