Power: 20(w) Resolution: 320*240 Projection painting size: 16-110 inches (cm) Applicable voltage: 220V Multimedia version: Rich and complete expansion interface, can be connected to U disk/computer/set-top box/dvd/headphone/small stereo, etc. Built-in focus wheel, when you change the projection distance, adjust the wheel left and right to get a clear image With a 1.6:1 projection ratio, you can watch dramas while lying down Support 5v-2A mobile power supply and can project anytime and anywhere Support 20-110 inch projection, adjust the distance of the projector according to the needs, you can cast a large screen Built-in horn speaker, sound and color are complete, the sound is moving, audio and video synchronization, and an external 3.5mm small speaker can also be connected Applicable to multiple scenes, dormitory viewing, couple time, outdoor camping, family gatherings, wedding projections, etc. Packing list: projector host *1 + power cord *1 + remote control *1 + manual *1 + packing box *1 Functions of the multimedia version: (not connected to the mobile phone); can read U disk, mobile hard disk, AV cable connected to the set-top box, DVD, etc.; (Multimedia version interface: USB interface x1, DC 5V interface x1, power interface x1, headphone interface x1, HDMI interface x1, AV interface x1)