Abstract: The disclosure provides a time-lapse photographic device. The time-lapse photographic device includes a camera module, a drive module, an environment detection module, and a control unit. The drive module is connected to the camera module to drive the camera module to rotate. The environment detection module is configured to detect an external environment of the time-lapse photographic device to generate an environment detection signal. The control unit is electrically connected to the camera module, the drive module, and the environment detection module. The control unit generates, according to a shooting stop parameter, a plurality of intermittent drive signals to control the drive module, and controls the camera module to shoot at intervals of the drive signals. The control unit adjusts operation of at least one of the camera module and the drive module according to the environment detection signal.

Abstract: Bands for wearable devices include multiple band retainers used to maintain engagement between an assembly (e.g., a pair) of bands. Some band retainers may be permanently affixed with the band at a certain location of the band, while other band retainers can be removable. The removable band retainers can be moved to different locations of the band, thus allowing the band retainer to retain another band at different locations. As a result, the assembly of bands can be used with different users, and in particular, users with different wrist sizes. Moreover, using multiple band retainers can provide an engagement force between the bands to withstand higher-impact events, such as swimming and diving. Additionally, bands and band retainers may include one or more liquid-resistant and corrosion-resistant materials.

Abstract: An optical sheet having an adhesive layer is wrapped by a first packaging component of which the material includes a plastic base mixed with silicone. A second packaging component then wraps the first packaging component, and the second packaging component is opaque. The plastic base can be polyethylene or polyethylene terephthalate, and the weight percent of the silicone to the plastic base is less than 5, preferably less than 3.