A bicycle operation device includes a clamp, an operation unit and a wireless communicator. The clamp is attachable to a handlebar of a bicycle. The operation unit includes a housing having an upper housing portion and a lower housing portion. The upper housing portion is located above the lower housing portion in a state in which the bicycle operation device is attached to the handlebar. The wireless communicator is configured to communicate with a bicycle component. The wireless communicator is provided on the upper housing portion.

A portable tool having an elongate frame with a front-to-rear lengthwise axis. The portable tool is configured to be held in a starting orientation, wherein the lengthwise axis of the frame extends substantially horizontally, with a user's hands separately engaging the portable tool at a first region and a second region forwardly of the first region. The portable tool has: a) a gripping assembly at the second region; and b) an engaging structure at the first region and including a handle with a gripping length that extends along a gripping line. The handle is connected to the frame and configured so that with the portable tool in the starting orientation and the handle in a first position: i) the handle gripping line makes an angle of no more than 15 with a horizontal reference plane containing the lengthwise axis of the elongate frame; and ii) a space is formed between the gripping length and the elongate frame to accommodate fingers on the user's one hand with the user's one hand grasping the gripping length.