Abstract: A headband for a wearable electronic device can include a first end portion, a second end portion, and a central portion that is disposed between the first and second end portions. The first end portion is connected to the central portion by an extension mechanism for adjusting a length of the headband, and the first end portion includes a battery compartment for receiving and holding a battery.

Abstract: A headband for a wearable electronic device includes a first end portion, a second end portion, and a central portion disposed between the first and second end portions. The first end portion is connected to the central portion by an extension mechanism for adjusting a length of the headband, and the first end portion includes a battery compartment for receiving a battery.

Abstract: A headband for a wearable electronic device includes a first end portion, a second end portion, and a central portion disposed between the first and second end portions. The first end portion is connected to the central portion by an extension mechanism for adjusting a length of the headband, and the first end portion includes a battery compartment for receiving a battery.

Abstract: There is provided a filter assembly arranged to be mounted over the air inlet of a fan assembly, the filter assembly comprising a filter frame arranged to support one or more filter media. The filter frame is provided with a first engagement member on a first edge of the filter frame and a second engagement member on a second edge of the filter frame, the first edge being opposite to the second edge. The first engagement member and the second engagement member are each configured to be engaged by a respective retention assembly when mounted on the fan assembly.

Abstract: There is provided an air treatment apparatus comprising an air flow generator that is arranged to generate an air flow through the air treatment apparatus, a moisture source that is arranged to introduce water vapour into the air flow, a body housing both the air flow generator and the moisture source, and a water supply system that is arranged to provide water to the moisture source. The water supply system comprises a water tank assembly that has a detachable connection to the body and the body comprises a cavity within which the water tank assembly is disposed and a side opening into the cavity through which the water tank assembly can inserted into and drawn out of the cavity.

Abstract: There is provided a filter assembly arranged to be mounted over the air inlet of a fan assembly, the filter assembly comprising a filter frame arranged to support one or more filter media. The filter frame is provided with a first engagement member on a first edge of the filter frame and a second engagement member on a second edge of the filter frame, the first edge being opposite to the second edge. The first engagement member and the second engagement member are each configured to be engaged by a respective retention assembly when mounted on the fan assembly.