Gental vibrate when your head nods forward to wake you up
Anti-Sleep Device for Long Hour Driving, Truck Drivers and Security Guard
For Drivers, Long Distance Truck Drivers, Road Trip Safety, Late Night Workers
Vibrate alert when detected dozing or nodding off
Ergonomic Design and comfortable feeling rubber. Fits comfortably behind either ear.
Please Note: This is a VIBRATING ONLY version. Battery Included.