Kính hiển vi cầm tay Mini bỏ túi 60x-100x

Mini handheld 60x - 100x pocket microscope magnifier
100% brand new and high quality
Characteristics: 1. 60 to 100 times electric zoom adjustable with clear white light made from long-lived (10 years) crystal leds.So use is not restricted. 2. The sights are clear and accurate.A clear white light source near natural light, colorless. 3. Low power consumption.The working current of crystal leds is 0.015A, 18 times less than the power consumption of flashlights and 0.25A for light bulbs. 4. For the attached 3 lr 1130 battery.Bright LED light makes the object clear and the focus dial can also achieve the correct focus 5. It's a great fit for collectors of all the little things!Stamps, coins, antique books, insects, plants, etc. are very suitable for amateur scientists, lovers and students...And jewelry identification, finance, taxation, philatelic, e-observation notes, tickets, mail, money, card paper and print
Specification: 1.Packaging: carton - leather - single installlation 2.Magnification multiple: 60x - 100x (adjustable) 3.Field of view: 4.4 mm 4.Working distance: 24.3 mm 5.Long: 82mm 6.Numerical aperture: 0.1 7.System focal space: - 6.25 8.Ambient temperature: - 4~122f 9.Measuring range: 0~4 mm 10.Measurement accuracy: ±1% usage method: 1.Pull the battery out alone. 2.Place the sample on a flat surface3.Place microscope upright, transparent cover face down 4.Press the power switch on the Led​​Switch 5.Choose zoom multiples (60x - 100x) 6 by adjusting zoom multiples.By visual observation, rotate the focal wheel to obtain the clearest image attention: 1.Please don't overshoot the focus gear 2.Please avoid severe vibration 3.Please don't expose yourself to the sun for long periods, especially in summer. don't be near the car heating 4.Do not release roses that should not rotate. any disassembly will hurt lens failure 5.Please clean the lens paper with clean soft cloth or lens cleaner. 6.Please don't wash the dirty things with petrol, oil, pesticides, etc.Do not wash 7.140 f or above with soapy water.In order not to damage the battery liquid instrument, please note the following: a.Please diskonnect power switch b after use.Replace battery c immediately after use.If not in use for a long period of time, remove the battery from the device so as not to cause leakage to damage the det