The Denso QS20P is a very compact & light weight, 2D code scanner. It only weighs 70g and is designed for maximum comfort for extended use. Able to read minimum 0.1 mm, which means readable of a few mm square QR Code. 
 
Achieved at only 70g.
Achieved to read minimum 0.1mm, which means readable of a few mm square QR Code.
Multiple holding available
| Reading | Readable Code: QR Code, Micro QR Code, DataMatrix, Resolution: 0.1mm, Reading depth: 3mm, PCS value: not less than 0.45, Skew Angle: 360° | 
| Communication | Interface: RS-232C, Speed: 115.2Kbps Max., Connector: sub-9 pin (Female) | 
| Power | Voltage: DC5V, Power Source: original AC adapter(3) | 
| Operation Environments | Temperature: 0 - 40°C, Humidity: 10 - 85%RH (without dews), Illumination: not more than 3,000 lx. | 
| Weight (excl. cable) | Approximately 70g |