The JLab Crasher Micro USB Rechargeable Wireless Bluetooth Speaker, Gunmetal version.

Features:
- Wireless sound with Bluetooth 4.1 and a 30 foot range.
- 10 hours of battery life with a 600mAh rechargeable battery battery built in.
- Built-in microphone for phone calls.
- Small, simple design for portable and on-the-go use.
- Excellent sound quality from a small speaker.