Specifications: 
Model: GV18 
Dimension: 58.5 * 39.5 * 12.3 mm 
Packing size: 100*100*75mm 
Net weight: 50g 
Water Resistance: daily water resistance, not for swimming and bathing

Hardware Parameter 
CPU: 533MHz MTK6260A 
Memory: 128M+64M, Suport Tf card Maximum 32G 
Display: 1.5'' inch TFT HD LCD; 240*240 px 
Bluetooth: V3.0 
Camera: 1.3M 
Battery: 450mAh Polymer 
Accellaration sensor: 3D acceleration, step counting analysis sedentary reminder, sleep monitor, Anti lost, remote camera 
NFC Support: Adapt automatically and data sync . 
languae: English,French,Espanol,polski,Italiano,Portuguese,Deutsch,Dutch,Turkey,Russian 

Note: All functions support android 4.3 and up smart phones. But for iphone, it just support answer & call, phone book, music play, camera, clock, pedometer, phone anti-lost alert. Still not support SMS, Radio, remote camera control, sleep monitoring, etc.