... with answer key , 10 colors for chooseDescription1.The latest mobile phone handset, convenient, practical, rich color2.Anti-radiation, retro, ... popular .3.Specilized handset, just connect with your mobile phone directly, no need adapter4.High quality, practical, environmental friendly5. ... 3m 6.Connecting plug:Φ3.5 mm four plug tips7.Only the answer key, no independent volume control8. Colors: Deep ...