The Mighty Purse Leather Smartphone Charger Wristlet features a hidden lightweight built-in battery that can recharge most Smartphone’s, ensuring that you will never be left powerless again. A fully charged Mighty Purse can charge a Smartphone up to two times before your wristlet will need to be recharged. Charge your Smartphone by plugging the interior USB cord into the phone. IMPORTANT NOTE: For Apple iPhone 4 and 5, iPad and iPad mini, you will need to purchase a licensed Apple adapter separately. Apple adapters are readily available online or at an Apple store.