Wagu drum 1 W Standard LED Bulb  (white)

Compact & Flexible Design: Portable LED eye chart light box with uniform illumination, 4-corner magnetic structure and removable lid for swapping horizontal/vertical charts to fit diverse educational testing scenarios. User-Friendly Operation: Magnetic panel for easy use, back-mounted power to switch modes, moderate brightness and clear marks ensure high-precision vision testing. Comprehensive Testing Marks: Equips red/green, ray/far-point astigmatism and cross marks to detect myopia, hyperopia and astigmatism for accurate assessment. Dual-Power Adaptability: Supports dual power supply for portability, suiting various testing environments; note to remove battery when using mains power to avoid short-circuit. Versatile Application: Dual-mark design meets multi-scenario needs, simple safe operation fits students and pros for reliable one-stop vision testing.