... House power off,travel,campng,emergency use Commodity:Hand Press dynamo led flashlight/dynamo torchDescriptionsMaterial:ABS Size:10.5x5.3x3CM. Color can be customized ... . Slide switch forward to turn on, backward to turn off.LED lamp is initially powerd by built-in batteries.When batteries ... , messages will be replied within 24-48 hours. Hand Press dynamo led light/trigger dynamo led flashlight