Features:<br> 1. Specially designed for measuring the refractive index of gemstones and solid materials.<br> 2. Lightweight and compact, easy to carry.<br> 3. This refractometer features high accuracy and easy operation.<br> 4. Identify single and double gems quickly and precisely.<br> 5. Low battery consumption for long service time.<br> 6. Approved by strict quality and safety standards for a long and trouble-free using.<br> Specification:<br> Condition: 100% New<br> Item Type: Refractometer<br> Material: ABS<br> Refractive Index Range: 1.30-1.81 RI<br> Color: As Pictures Shown<br> Power Supply: 1 * AA Battery<br> Size: Approx. 13 * 6 * 3.5cm/5.1 * 2.4 * 1.4inch<br> Weight: Approx. 720g<br> Package List:<br> 1 * Refractometer<br> 1 * Electric Torch (Battery is NOT included)<br> 1 * English Manual<br> Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.