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
0.216
Package weight: 0.251 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