Color:

B1 one drag one 3.5mm [for camera SLR computer]]

B1 one-to-one Android model [for Android phones with Type-c single charging port] supports Apple 15 phones

B1 one-to-one Apple model [for Lighting iPhone]]

B1 one-to-one universal model [three interfaces Universal]]

B2 one for two 3.5mm [for camera SLR computer]]

B2 one for two Android models [for Android phones with Type-c single charging port] support Apple 15 mobile phones

B2 one for two Apple models [for Lighting iPhone]]

B2 one-to-two universal model [three interfaces Universal]]