HG Vena Finder ECO is the new limited edition vein search device. We thank everyone for their support and great feedback and are grateful for the success of our vein finder HGVF637. As Gratitude To our customers we have launched an ECO model. Device as simple as always and easy to use with a new look. The vein search device is a device for assisting healthcare professionals in accessing veins. As stated in the user manual, follow simple steps for easy and accurate access to the vein using THZ transillumination. Separate on-off sliding switch, 3 sliding intensity modes for different skin tones and adjustments. Built-in 3.7V 800mAh long-lasting lithium-ion battery. HAZMAT approved. Universal micro USB charging socket, so you can charge the drive via power bank, laptop, PC, Android charger. A free charging cable also comes in the box. Charging light. Red = Charging Green = Full Charging. CE and ISO certification. HG tear hemostatic lace belt can be attached to the unit (not included in HGVF eco package) THZ venous transilluminator technology, improved visibility provides much clearer vein visibility Easy on-off switch, 3 intensity mode switch, adult vein finder for obese, USB charging port and dehydrated charge indication, low Bp, high trauma and emergency use, ABS material Made in India and ISO certified with diamond finish.