Overview: Primary lens: 2.5X (Times-60mm 32mm) Secondary lens: 45X (Times-9mm) Light source: LED light emitting diode Three R1130 batteries are needed Functions: Reading, jewellery evaluating, lighting & currency detecting etc. Feature: Small volume, easy to carry, unique meshed skid-proof design for outer housing Specification: Weight Approx:53.4g Size Approx:9 x 4.6 x 1.6