Support single-tube, dual-channel, astronomical and other standard telescopes Built-in aluminum battery 800 mAh Continuous effective use for about 150 minutes Maximum support 256GB TF card (no card is shipped) Video format and encoding 264 V13wifi electronic eyepiece camera 1.5-inch display screen optical eyepiece recorder single telescope function parameters: 1.5-inch high-definition TFT (320x240) display pixel full-view IPS Video resolution FHD 1920x1080. Support screen-off power saving function (APP setting) default screen-off for 1 minute. Colour:Black Material:ABS Package Contents: 4 x Electronic eyepiece camera 4 x Data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.