Small and lightweight, easy to carry or use.Suitable for all skin types, especially infants, children or obese patients.The vein finder can be used directly on human skin to observe blood vessels.LED , widely used in clinics, hospitals or homes for intravenous injection.Unique red LED light can be used to help anyone find the vein under the skin.Operating Instructions: A: using, choose a relatively dark environment to avoid the engine effect due to too strong surrounding light; B: Place the instrument astigmatism area in a patient's palm or feet when using; C: Clockwise rotating power switch to open it; depending on the patient's condition, rotating power switch to adjust the brightness of the to be searched veins were clearly visible, (Avoid the eyes being exposed to instrument directly, otherwise it will cause eye discomfort, especially newborns and infants.)D: Turning off the power After using, and counter-clockwise power button to turn off E: Working time no more than 120 seconds each time, otherwise it will reduce the loss of performance or reduce the life of the .Power: 15W LED beads: four core *3 American Rep Built-in lithium battery: 7.4V 650MA Charge voltage: 8.4V1A Size: 190 x 24 x 35mm Plug Type:EU Plug,it applies to Indonesia, Germany, , , Italy and so on Voltage: AC100-240V color:White Material:plastic Package Contents: 1 x Vein Detector 1 x English manual 1 x Charger Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.