FEATURES
1. Type A is better for concentrating light, Type B is better for resisting to fall.
2. White light is bright and suitable for throat examination.
3. Yellow light is soft and suitable for pupil inspection.
4. The body is engraved with a 50mm scale, which can be used for daily simple measurement, fast and convenient.
5. The body is equipped with a pupil-control data progression table, which can help with routine examinations such as clinical examination.