... popular promotional gifts 1. Article Namebottle opener keychain with led light or music 2. MaterialIron, ABS, speaker, pcb.3.Process ... and sound recorder/ promotional keychain with music, voice, or led light Talking keychain is widely used for keys, key rings, ... etc, as per customer's request5: Logo method: offset printing, screen printing, laser engraving, embossed etc6: Advantage: Nickel free & ...