| Features | |
| Stereo sound effect Standard 3.5 mm audio plug Freely answer calls with the built-in microphone Adjustable volume control Designed with an "IP" and "NK" button for connection with different cell phones Equipped with a 1.2 m cable | |
| General Specs | |
| Brand & Model | LANGSTON IN09 |
| Type | In-ear earphones |
| Sound | Stereo |
| Microphone | Yes |
| Frequency Response | 13Hz-22.5KHz |
| Sensitivity | 110dB |
| Impedance | 32ohms |
| Connector | 3.5 mm audio jack |
| Cable Length | 1.2 m |
| Compatibility | iPhone， Samsung， HTC， Xiaomi， Meizu， Sony， Blackberry， Nokia， HUAWEI， LG， ZTE， Lenovo， etc |