by Kaiterra (formerly Origins) product website

• Laser particle counter, measuring particles down to 0.3 microns in size
• Conversion to PM2.5 and PM10 using cloud-based calibration based upon location (currently only Beijing and Shanghai)
• Connects through wifi to app on smart phone (Android/iOS), showing current and historical data
• Up to 8 hours of battery life
• 300 grams, 14 cm

• Review in www.thebeijinger.com
• Just how accurate is the Laser Egg? by the manufacturer