2 X 1600mAh Replacement Battery For HTC EVO DESIGN 4G And HoneyK&trade; 3 Colors Silicone Wrist Band Battery type: Li-ion; Voltage: 3.7V; Capacity: 1600mAh Grade A cells to ensure longer battery life and charge cycles More than 500 recharge cycles over the life of the battery Built-in circuit protection Includes HoneyK&trade; 3 Colors Silicone Wrist Band