Tecno S1 comes with Android 6.0 Marshmallow Os, 4.0 Inches IPS display and 480 x 800 Pixels resolution + 186 ppi density, It has Blue, Black and White colors, Single SIM Slot supports 2G and 3G network.
The Smartphone has 2MP rear camera but no front camera.
Tecno S1 has Quad-Core 1.3GHz Cortex-A53 processor,MediaTek Chipset and Mali GPU.
It has 512MB RAM and 8GB internal Storage and support upto 32GB Micro SD card. It brings Bluetooth 4.0, A2DP+ microUSB v2.0 USB and 3.5 mm Audio jack.
Here is Li-lon1500mAh Non-removable battery but no fast chager and wireless chargeing charger support.
The Smartphone has Acelerometer, proximity sensors.