1.Compatible models:fit for SAMSUNG S5660 2.Grade A Li-ion Polymer core Battery Cells 3.High Capacity,Normal capacity:1200mah 4. Standard voltage:3.7v 5.Limited Charging:DC 4.2V 6.life cycle:Over 500 times 7.Durability:High capacity battery cell enables longer standby time and talk time 8.Eco-friendly:Use enviromental- friendly materials to minimize contamination 9.Safety:PCM board provides protection against over charging, over discharging, over current and short-circuit. Products have gone through the drop test, smash test and acupunture test to ensure the safety. 10.One year warranty 11.product weight:21.8g