The invention relates to a
dumbbell, in particular to an adjustable
dumbbell with the monitoring function. Balance weight cavities are formed in a balance weight base, balance weight plates are clamped in the balance weight cavities and are detachably arranged on balance weight mechanisms, openings are formed in the top ends of the balance weight plates, a clamping hole is formed in the inner wall of each opening, a clamping groove is formed in the bottom of each balance weight plate, convex sheets are arranged in the balance weight cavities and are clamped to the clamping grooves, a
handle is detachably connected with the balance weight base, and a monitoring device is further arranged on the
handle. According to the structure, because the
dumbbell is provided with the monitoring device, and the
handle is detachably connected with the balance weight base, when the dumbbell is in use, the balance weight base can be used as weight balancing and can also serve as part of the weight, various weight balancing schemes are provided, and the dumbbell can be integrally carried and is very convenient to use; the balance weight plates are clamped to the clamping holes through the convex sheets, no
noise is generated, resistance is small, connection is firm, the dumbbell will not waggle, a user can operate the dumbbell with one single hand very conveniently, and the overall structure is compact.