Traveler Guitar TGA-1E Electric Guitar Headphone Amplifier

Generate a 100-character excerpt from the product description below. Return ONLY the excerpt text, without any prefixes, notes, or explanations. Example: “Compact wireless speaker with 12-hour battery life and waterproof design.” Product description:
Volume, gain and tone controls
Aux-in for jamming with external sources
Rechargeable battery that lasts around 4 hours per charge