The battery life on our hybrid smartwatches should last 2+ weeks. Please be advised that this is based on usage and wear conditions. Your smartwatch should reach 80% charge within 40 minutes using the USB charger supplied. If you have further questions you can visit our smartwatch support page at https://www.citizenwatch.co.uk/smartwatch-support. Alternatively, please contact our service team at service@citizenwatch.co.uk.