Edited sentence: According to this view, battery-powered watches will become disposable items, so the purchaser will not care about the cost of replacing the battery.However, some purchasers may be persuaded by the ecological benefits of solar watches: less waste and lower energy input, not to mention the reduced hassle of not having to purchase a replacement watch every few years.In addition, the widespread use of watches as jewelry—worn as much for their aesthetic value as their timekeeping ability—makes the prospect of disposable watches less attractive.Some critics point out that both the low cost of quartz watches and the extreme longevity of the newest lithium-ion non-rechargeable batteries (said to be upwards of ten years in some watches) may make solar power, whilst an interesting technology, obsolete before it truly catches on