Color: White, Pink, Other Colors optional (for 1000PCS up) Frequency: GSM900/1800 MHz or GSM850/1900 MHz Screen: 0.8" LCD screen Battery: 700mAH 1, One Key Call Press number 1, 2, 3 or 4 key to contact important persons, such like Daddy, Mammy, Teacher? 2, Smart Emergency Call Wherever your kid, they may press the emergency call key and contact you immediately. 3, Long-distance Control Restrict phone call time and SMS/MMS from long-distance. 4, Location Track Set 9 normal locations for tracking, such like school, home, park? 5, Sound Monitor Listen what? ? S your kids listening. You can hear the sound around your children, while they are playing, watching TV or crying? 6, Low Radiation Hands-free. Strong radiation alarm. Low radiation circuit/PCB design