Features:∵ TPA6120A2 chip， the degree of distortion are less than 0.000635pct
∵ Support HiFi， please you by original sound
∵ Bass button， bass or not， your call
∵ Full metal shell， nice touch feelings and wonderful using experience， cool decoration
∵ High capacity battery: More than 25 hours， 30 minutes charging， 5 hours using time
∵ Portable design， can be put in into pocket
∵ Beautiful appearance， perfect gift

Specifications:
∵ Impedance: 16 - 300ohms
∵ Maximum output power: 103mW
∵ Frequency response: 20 - 20KHz
∵ Digital noise floor: Less than 0.09mV
∵ Signal to noise ratio: 108dB
∵ Charging time: Less than 4 hours
∵ Play time: More than 25 hours
∵ Gain: 6dB Channels: 2 (2.0)
Model Number: NX3
Special Feature: Mini，Portable
Usage: Plug and play Package weight: 0.249 kg
Product Size(L x W x H): 11.00 x 7.00 x 1.50 cm / 4.33 x 2.76 x 0.59 inches
Package Size(L x W x H): 17.50 x 13.50 x 3.00 cm / 6.89 x 5.31 x 1.18 inches Package Contents: 1 x Headphone Amplifier， 1 x Audio Cable， 1 x USB Charging Cable， 2 x Silicone Band， 1 x Multilingual User Manual