The 3.7V 800mAh DBC-800D Lithium Battery is a rechargeable battery designed for the Doro PhoneEasy 5. It is a universal battery compatible with various brands and models, featuring a sleek iridescent finish and made from durable acrylic material. The battery case includes an armband for easy portability and has a single port with a capacity of 800 mAh. With a voltage of 5V and a connectivity option of 30-pin, this battery is a reliable and convenient accessory for keeping your mobile phone powered up.