The Panasonic RPHC200K are plasicky and cheap-looking noise-cancelling headphones. They're comfortable, won't leak too much and sound decent. However, they severely lack in bass and their poor noise isolation may also cause ambient noise from loud environments to ruin your listening experience.
The RP-HC200 are flimsy headphones. The all-plastic build and thin headband feel a little cheap and susceptible to breaking. There's minimal padding on the headband and the non-detachable cable has no controls. On the upside, they are relatively comfortable, the ear cups being decently padded and the headband not putting too much tension on the head.
The RP-HC200 look a little cheap with their all-plastic build but have an understated studio design that could work for some. They are matte black, with a glossy finish on the ear cups. The two types of padding material used are also black. The only other color comes from the branding logo and the noise cancelling button, which are blue.
The Panasonic RP-HC200K are surprisingly comfortable. The lightweight build does not put too much tension on the head and the padding is relatively soft and molds well around the ears. However the flimsy build isn't very stable and the inner ear cup protrudes close to the listener's ear, which may cause discomfort for some.
There is only one noise cancelling switch on these headphones. Disappointingly, the non-detachable cable provides no inline controls of any sort, which means there will be no call/music or volume buttons to control your audio.
The lightweight ear cups of the RP-HC200 do not sway easily. This makes these headphones above-average at maintaining their position during high-intensity activities like running or jumping. They're not designed for sports and won't be ideal for the gym, but they will rarely slip off your ears during casual listening sessions unless the non-detachable cable gets hooked on to something.
The RP-HC200 are mid-sized over-ear headphones. Their relatively small ear cups fold flat to take up less space, which makes them somewhat portable. Unfortunately, they do not fold up into a more compact format and won't be easy to carry on your person and will require a bag.
The active noise cancellation in the RP-HC200K is inefficient and barely blocks any ambient noise. Luckily, the decent seal does not leak much sound and provides some passive isolation but not enough to fare well in moderately loud environments. They won't isolate your listening experience on regular commutes or on international flights, which is disappointing.
The RP-HC200 have an excellent battery life that will last a surprising 112 hours of continuous playback. Despite their noise canceling not being particularly efficient you will rarely need to change the AAA battery when used casually. However, they only have noise canceling as active features, which means they won't be the most versatile headphones.
The RP-HC200 have an exceedingly long battery life of 100+ hours, which should be more than sufficient for a weekend's worth of continuous play time. You can also use these headphones passively by switching the noise canceling off when the battery runs out. They're great headphones to take on a camping or road trip where you don't have access to stores, to purchase other AAA cells. Unfortunately, they don't have any battery saving features.