A training aid (10) provides real-time biometric feedback for swung or linearly accelerated implements where the feedback is provided above a user adjustable threshold. The training aid (10) includes a two-part housing (12) and mounting means for releasably mounting the housing to an implement. A battery (16) is located in the housing (12) with a buzzer (22) connected to the battery (16) through an electrical circuit. A force activated switch (14) in the electrical circuit is activated to energize the buzzer (22) to sound in response to displacement of the training aid. The force activated switch (14) has a force threshold at which the force activated switch (14) is activated to energize the buzzer (22) to sound. The force activated switch (14) is configured so that the force threshold is user adjustable.