By synchronizing daily with the signals, the Wave Ceptor watches achieve high accuracy, using a quartz crystal to keep time between synchronizations. Some radio watches, including some Wave Ceptors, are solar-powered, supported by a rechargeable battery.[1] The display of the models ranges from fully digital, analog and analog-digital. Some later models, described as Hybrid Wave Ceptors, support GPS for information on both time and location, in addition to broadcast signals.[2]