1.for ALCATEL OT303/OT301 2.Have factories for battery&PCB&package 3.4-day ... standby time 4.doubleIC,1-year guaratee Itemfor ALCATEL OT303/OT301 Compatible modelsOT301/OT302/OT303 Battery typeA grade Li-ion Standard ... would try to meet your need. Thanks. for ALCATEL OT303/OT301