Deuter's handy U-lock with opening indicator and individually adjustable 3-digit numerical code is primarily used to secure smaller pieces of luggage and items with a low risk of theft. Due to its TSA certification, it is particularly suitable for travel to the USA. The lock can be opened and closed again by the US security authorities without damage. Thanks to the opening indicator, it can be determined later whether the luggage has been opened (red ring visible) or not. To reset the indicator for a new trip, the shackle is only 360 ° to rotate.