DIGO Rugged elderly GSM Cell Phone Shockproof dustproof Dual SIM Long-time Standby Unlocked Cell Phone with 2 LED lights 1.Frequency :GSM 900/1800mAh 2.Big battery ,very long standby ,stay up to 15days to one month 3.Prefessional dust proof and water proof desight (cant be immerce into water) 4.Big screen ,big font ,big button very suitable for the elders 5.TWO big LED light ,could be working for long ours ,suitable for long trip or camping