A wearable band may be coupled with an electronic device, and a user can secure the electronic device around a body part of the user with an attachment mechanism of the wearable band. The wearable band and/or the attachment mechanism can include an incremental adjustment mechanism. The attachment mechanism can produce an initial fit or tightness when the wearable band is secured around the body part of the user. The incremental adjustment mechanism can be used to incrementally adjust the initial fit of the wearable band on the body part. The incremental adjustment mechanism is configured to allow the user to adjust the fit or tightness of the wearable band around the body part more finely than the attachment mechanism.