Product description<br /> Material: plastic + metal<br /> Color: Black<br /> Size: 16 * 6<br /> Probe length: 8cm<br /> Package Contents: 1 * Soil pH Tester<br /> 1.2-in-1 function Test soil pH value of plant ,quickly helps you specialize in grasping when you need to water your plant, control the pH value in the soil.<br /> 2.Accurate and reliable Premium Double-needle Detection Technology strongly enhances the speed and accuracy of detecting and analyzing soil pH acidity, refuse to be a killer of plants, promote plant growth in a healthy way.<br /> 3.Easy to use Just insert the sensor probe into the soil about 15cm, toggle switch to test pH value, fertlity you would like to measure, then wait for a few minutes till the pointer stops swinging to get a stable reading on the scale dial. If the plant is very dry, the soil pointer will not swing, that means your plant needs water.<br /> 4.COMPACT FOR INDOOR & OUTDOOR USE: Portable and easy to carry to anywhere you want .Know when to water, adjust pH, or change lighting for your flowers, plants .Refuse to be a killer of plants, promote your plant growing in home , garden, lawn or farm etc.<br /> 5.No Battery Needed No batteries or electricity needed, ready to use out of box. Plug and read.