The Antigravity UltraLight XA is a truly Multi-Function Flashlight It's an all-Aluminum ruggedly built 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 XA is extremely WATER RESISTANT and can fall into water and not be damaged (Not intended for Diving use) It has a built-in Lithium-Ion battery that is easily recharged from any USB Port It comes with a USB Cable, plus a Bicycle Handlebar Mount Weight: 0.8 lbs Dimensions: 8" x 1.85" Battery Capacity: Rechargeable Lithium-Ion Battery 2600 mAh Music Play Time: about 25 hours (depending on volume) Standby Time: about 100 days Charge Time: about 4 hours