Specifications: - Brand: Xain-USA - Battery Cell Composition: INR-Lithium-Ion - Unit Count: 1 - Voltage: 3.7V - Compatible with Croove Amplifier B0143KH9KG - Recommended Uses: Replacement for 3.7V 2600mAh - Weight: 1.7 oz – 49g - Dimensions: 18mmx20mmx65mm / 0.75”x0.85”x2.65” ±0.02”