2X 2000mAh Replacement Battery For Samsung Galaxy S II (T-Mobile) Hercules SGH-T989 Skyrocket SGH-I727, EB-L1D7IBA And External Wall Charger And HoneyK 3 Colors Silicone Wrist Band Battery type: Li-ion; Voltage: 3.7V; Capacity: 2000mAh 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