Last used about three years ago and was working back then. 
What is pictured is what's included.  
Sold as is.

Manufacturer's Description:

The Osmo Mobile 2 is a handheld smartphone gimbal made for the storyteller in all of us. Whatever your passion, wherever your destination, and whenever you feel inspired, capture moments with cinematic movement and incredible ease. Using a lightweight design, intelligent functions, and a long-lasting battery, the Osmo Mobile 2 lets you share your story.

Features:
Specifications:

General:
     Dimensions: 295×113×72 mm
     Weight: 485g
     Model: OM170

Compatible Phones:
     Weight: ≤240 g
     Thickness: ≤8.9 mm 
     Width: 58.6 - 85 mm

Battery:
     Type: 18650 Li-ion
     Capacity: 2600 mAh
     Energy: 18 Wh
     Voltage: 7.2 V
     Charging Temperature: 5 - 40°C
     Operating Temperature: 0 - 40°C
     Operating Time: 15 hrs
          * Under ideal conditions with the gimbal fully balanced.
     Charging Time: 2 hrs
          * Measured with a 10W charger.

Gimbal:
     Consumption: 1.2 W
          * Under ideal conditions with the gimbal fully balanced.
     Controllable Range:
          Pan: ±160°
          Tilt: ±155° (landscape orientation)
     Mechanical Range:
          Pan: ±170°
          Roll: -90° to +70°
          Tilt: ±170°
     Max Controllable Speed: 120°/s

Wireless:
     Model: Bluetooth Low Energy 4.0

App
     DJI GO