Features: 
4.7'' IPS 1280 * 720px capacitive touch screen， quite sensitive.
Dual Cameras， 1.6MP front camera， 8MP back camera with flashlight and auto focus.
1GB RAM 8GB ROM and support micro SD card up to 32GB extended.
MTK6582 quad core CPU， 1.3GHz Android MIUI V5. 
Support OTG， Light sensor， Proximity sensor， WIFI， Ebook， Email， Messaging， Wallpapers， Calendar， Calculator， Clock， etc.
 

Specifications:

Basic Information
Model Xiaomi Redmi 1S (4G)
Band

2G: GSM 900/ 1800 / 1900 MHz

3G: TD-SCDMA 1900 2100 MHz

4G: TDD-LTE 1900/ 2300/ 2600 MHz
Sim Card Single SIM Card Single Standby
Service Provided Unlocked
Style Bar
Color Grey
Shell Material Plastic
Battery 2200 mAh
System
OS Android MIUI V5 OS
CPU MTK6582 Quad Core 1.3GHz
ROM 8GB
RAM 1GB
Screen
Display Size 4.7 Inch
Type Capacitive touch screen
Resolution 1280 * 720 pixels
Screen Material IPS
Other Features
Audio MP3/ AAC/ AAC+/ EAAC+/ AMR/ WB-AMR/ MIDI/ OGG
Video 1080P/ MPEG4/ H.263/ H.264
Image JPEG/ BMP/ GIF/ PNG
E-book TXT/ DOC
FM Radio Yes， earphone needed
Earphone Port 3.5mm
Data Transfer & Connectivity
 
Data Transfer USB / Bluetooth
Mobile Internet WAP / WIFI
General
Camera 1.6MP front camera， 8MP back camera with flashlight and auto focus
OTG Support