Specifications:

• Working temperature: -20 to 60 degree
• Working current: 35mA
• Power supply: Lithium battery
• Origin: CN(Origin)
• Model Number: Optical Power Meter
• Measuring range: -50 to 26
• Endurance time: 18 hours
• Color: black
• Charging time: :less 3 hours
• Charging current: 300mA
• Certification: none
• Brand Name: ACEHE
• Automatic shutdown time: 10 minutes