ChiQ B8U projector + CLR frame screen 16:9

ChiQ B8U PROJECTOR SPECIFICATION

1. Light engine
Source : laser
Color : 130% BT.709, Dolby Vision, HDR10, HLG
Screen Size : 80 to 150”, 120” is recommended
Brightness : 2,200 ANSI lumens*
Resolution : 3840x2160 4K UHD
Contrast : 1483:1
3D Compatible : yes
Throw Ratio : 0.21:1
Corner Correction: 8 points (4 corners and mid V/H)
Projection Modes : front / back / ceiling front and back
Electric Focus : yes
Digital Zoom : yes
Offset : 140%
Refresh rate : 4k @60fps
*Color brightness (color light output) and white brightness (white light output) will vary depending on usage conditions.
Color light output measured in accordance with IDMS 15.4; white light output measured in accordance with ISO 21118.

2. Image
MEMC (MJC) : yes with FlowMotion 4 (4K and 1080p compatible)
Certifications : Dolby Vision, HDR10, HLG
REC709 : 130%
ALLM (auto game mode): yes
Platform
OS : Android TV 11
Chromecast : yes
OK Google : yes
CPU : MT9629
GPU : MALI-G52
RAM : 2 GB
ROM : 32 GB
Wi-Fi : 2.4 + 5Ghz
Antennas : MIMO 2T2R
Bluetooth : 5.1

3. Interface
Inputs:
1x HDMI 2.1with CEC
1x HDMI 2.1 with eARC and CEC
2x USB 2.0 with media player (5V 2A)
1x RS-232
1x LAN
Ouputs:
1x SPDIF
1x Coaxial
1x Jack 3.5
Sound:
2.2 sound system
Total of 20watts
Dolby Atmos, DTS HD, Dolby Digital 5.1
Integrated DSP

4. Power
Inputs : 110 to 250v
Current : 2.8A / 1.2A
Consumption : Max: 220wh
Eco Mode : 145wh
Stand by Mode : 0.39wh
Noise (eco/standard/bright) dB: 25.4/28.5/28.7

5. In the box:
1x Projector TV
1x Remote Control
2x AAA Batteries
AC Cables: x4 (US, EU, UK, AUS)
1x Quick Start Guide
1x Warranty Card

High quality frame projection screen from Leinwandbau.info:

You buy a CLR frame screen for ultra short throw (UST) projectors. Frame width 10mm slim frame. Easy installation system. 

The frame projection screen consists of an aluminium frame to be pluged together from yourself. There will be glas fiber sticks all around the projection screen fabric. This glas fiber sticks will be stretched with springs to the aluminium frame. The Frame screen does have 36mm thickness. Wall holder is inclusive. 

Gainfactor: 0,7

Viewing angle: 175°

This projection screen fabric is called CLR Pet crystal. This kind of screen does show fins which are colored black from on side (top side) and white/gray from the other side (bottom side).

This is the reason why the screens reflects the light just from one side (bottom side) perfectly, but not/alot less from the other side (top side). This effect is used by ultra short throw projectors because they send the light from bottom side to the screen. So the fabric just reflects the light from the projector but not from other light soures like windows or lamps which come from higher sources.