Headlight with Finger Induction. The headlight will turn on when your hand is within 15 cm of it, and it will turn off when your finger is removed. The battery is located in the headlight. The headlight may be charged via a USB connection. Press Switch and Inductive Switch are its two switches. Press switch modes include High, Mid, Low, and Flashing ( Press and hold for 2 seconds to enter the flashing). Inductive switch modes have bright lights.