The Bluetooth Retro Phone Handset is simple to charge using the USB (Universal Serial Bus) port on your computer All you need to do is plug the USB (Universal Serial Bus) cable into the phone & the handset & allow it to charge Once fully charged it should last for Approx. 7 days on standby & give Approx. 4 hours of talk time Like most bluetooth devices once paired the heandset will always connect to the mobile phone once in range Great fun for old & young alike