With 1 bright bulb in this metal pen flashlight suitable for doctor use and work as touch for lighting in dark doctor pen light our 'PenStar' LED Pen Light have following characteristics:1. With 1 bright bulb in this metal pen flashlight suitable for doctor use and work as touch for lighting in dark.2. Economy: metal pen flashlight use 2xAAA battery can last more than 20 hours.3. Pen shape ...