First of all,Techo 7C is a single lined phone.It has not yet launched dual.
To get the latest update make sure you check it here regulary.
TECNO DROIPAD 7C goes for around $130 and its black in colour.If you love black,this is your phone.
Its a good Android phone running on version 5.0 (Lollipop).
Its Processor speed is 1.3GHz dual-core Processor
Memory
1 GB RAM a good ram to hold atleast 8 apps running.
Built-in Storage: 8GB Storage
Dimension: 216 x 124 x 8.7 mm
Display
7.0-inch Touchscreen
1024 x 600 pixels (169ppi)
Camera
Rear Camera: 2 MP Camera
Video
Rear Camera Features: Geo-tagging, autofocus,
LED Flash
Front Camera: 0.3 MP Camera
Rating
I rate it 5/10