Passion 660 sports a 5-inch HD display with Corning Gorilla Glass 3 protection. The smartphone runs Android KitKat 4.4 and is powered by 64-bit 1.5GHz octa-core Qualcomm Snapdragon 615 (MSM8939) processor coupled with 2GB RAM.

The phone comes with 16GB of internal storage which can be expanded upto 64 GB via microSD cards. Passion 660 packs 13MP rear camera with LED flash and a 5MP front shooter for selfie lovers.  

The smartphone gets its power from a 2300mAh battery. On connectivity front, Passion 660 supports 4G, 3G, GPRS/EDGE, Wi-Fi, Bluetooth v 4.0 and a micro-USB slot.

The smartphone will be made available in Black and White colour variants. The device come with pre-loaded accelerometer, e-compass, barometer, light, proximity, step-counter, and gesture sensors.