A diet based on 1200 calories daily is the recommended minimum for safe and healthy weight loss. This is because 1200 calories will generally provide an adequate nutritional intake for most individuals, yet still allows the reduction of calories to the level that most dieters require in order to lose weight.
Stand-by time (battery life) Stand-by time is the officially quoted longest time that a single battery charge will last when the phone is constantly connected to the GSM network but is not in active use. The stand-by time is highly dependent on the cellular network environment, such as the distance to the closest GSM cell tower (base station).
It's better to replace a watch battery before it's completely dead rather than waiting for it to expire in the watch. Most batteries have a useful life of 18 to 24 months, some can last as long as 5 years, depending on the watch and its features. Replacing a watch battery every two years is a good practice. Many modern watches also have an end-of-life indicator.