Features: brand new and high quality There are 3 types, EU standard with battery and chargable, EU standard without battery and chargable, US standard without battery and chargable. High Efficiency Vein finder device on hands, arms and legs for adults and children reducing pain for patients. Vein locator Updated Round Ring shape design allows veins detection with best result in darkness. LED Transilluminator Vein Finder can detect veins up to 10mm in depth and may be used on both adults and infants. This vein finder device must be connected to a power supply with EU/US plug charger or USB cable. Specifications: Material: ABS Size: 145x97mm/5.7x3.8 in Outer Diameter: 50mm/ 2 in Inner Diameter: 30mm/1.2 Thickness: 10mm/0.4 in Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1X Vein Finder 1X USB Cable 1X Power Charger