More to the eye. You can reach a magnification of 8.5x with a third lens which is provided.

• magnification:
• 1.5x - main front lens
• 3x - with main and flip-up lens together (Pic. 3 & 4)
• 8x - with third lens
• flip-up lens diametre: 29 mm
• fits all sizes
• extra light adjustable angle (up- downwards & sideways)
• (two batteries "AAA", not included)
• third lens can be safely stored/transported in the headband