The Antigravity UltraLight X is a truly Multi-Function Flashlight It is a compact LED Flashlight that can also be used as a Bluetooth Audio Speaker, Hands-Free Audio Device, and a Power Bank to charge your USB Devices when they run low on power The UltraLight X is a 3-piece modular unit and it can be used as a Bluetooth Audio Device and Flashlight at the same time, or you can take off the removable Flashlight Head and replace it with the included extra Speaker to get a fuller, louder audio experience It has a built-in Lithium-Ion battery that is easily recharged from any USB Port It comes with a USB cable, a clip for Hands-Free Phone use, a Bicycle Handlebar Mount, plus an Extra Speake Weight: 0.4 lbs Dimensions: 7" x 1.8" 2600 mAh Rechargeable Lithium-Ion Battey Music Play Time: about 25 hours (depending on volume) Standby Time: about 100 days Charge Time: about 4 hours