Feature:1. Built-in with a 3.7V 1200mAh lithium battery.2. Folding stand is easy to use, no assembly required.3. A-frame shaped is more stable for holding the guitar.4. Comes with a TF card with 128MB capacity.5. Supported with WMA, WAV, and MP3 audio formats.6. Universal guitar stand, suitable for acoustic and electric guitars.Specification:Features:Built-in with a 3.7V 1200mAh lithium battery.Folding stand is easy to use, no assembly required.A-frame shaped is more stable for holding the guitar.Comes with a TF card with 128MB capacity.Supported with WMA, WAV, and MP3 audio formats.Universal guitar stand, suitable for acoustic and electric guitars.The Benefits of Guitar Open Sound:1. The sound quality of the guitar can be greatly improved. The high and low bass are integrated with each other, which is more coordinated.2. The sustain of the guitar will be longer, and the transition of the sound will be more coherent!3. After sound open, the tone of the guitar will be more transparent and powerful.4. The volume of the guitar will also increase significantly.Specifications:Material: ABS+aluminum alloy+siliconeBattery: 3.7V 1200mAh 103040 lithium batteryTF Card Capacity: 128MBAudio Format Supported: WMA, WAV, MP3BT Version: BT5.0BT Name: SGS-10Transmission Distance: 10MUse Duration: About 4 hoursUnfolded Size: 312 * 276 * 222mm / 12.28 * 10.87 * 8.74inFolding Size: 312 * 135 * 57mm / 12.28 * 5.31 * 2.24inItem Weight: 594g / 1.31lbPackage Weight: 738g / 1.63lbPackage Size: 33.3 * 15.5 * 7.5cm / 13.11 * 6.10 * 2.95inPackage List:1 * Stand1 * Type-C Cable1 * Manual (English)Package List:1 * Stand1 * Type-C Cable1 * Manual (English)