Swimming propelling device

A swimming propelling device, comprising:

• a floating body (10) having a space enclosed by a top wall, two curved side walls, a removable bottom wall;
• a motor (22) secured under said bottom wall and connected with a propeller (23) surrounded by a guard (212);
• two flanges (1301) formed respectively along said two curved side walls to facilitate balancing when submerging;
• a battery (24) being mounted on said removable bottom wall of said floating body (10) in order to store and supply power to drive said motor (22);
• power control devices mounted at the bow of said floating body to control ON-OFF and the speed of motor, including a switch (4) to control ON-OFF of said motor and facilitate either swimming or submerging;
• a neck strap (15) and a waist strap (16) provided for binding said floating body with a user;
• a plurality of locking fasteners (15a, 16a) fixed on said floating body so that said flexible neck strap (15) and said waist strap (16) or tight strap (17) can be removed from said floating body instantly;
• characterized in that
• a floating plate (3) having a hole and two flanges (303) formed respectively along two sides of the periphery of the hole to mate with the two flanges (1301) of said floating body (10), so that the flanges (1301) of said floating body can sit exactly on the flanges (303);
• thus floating body (10) can be either used alone as a underwater propelling device or can also sit on said floating plate (3) to facilitate swimming, and both can be bound together by a strap (302), and the floating body (3) is connected with a user's wrist by a string with a ring (301) at the end thereof.