Small, handy and also for your pocket suitable. 'Train' the operation is very simple. Has already been described in other reviews. A battery is included. Only the key chain is missing. So respect ... who wants to add the part of his car keys should, to order the trailer for approximately 1.50 (or less). With frequent use or the "Hide" in pockets etc., it may happen that the trailer becomes disconnected or the small opening in the housing of the operator prepares himself. All in all ... small - handy - virtually.
