Countryman B6W4FF05BSM, Lectrosonics: SM, SMa, SMb, SMDa, SMDb, SMQ, SMQa, SMQV, SMV, UM400a, UM450, (W4) Standard gain for most uses, (B) Black, B6 Omnidirectional Lavalier Microphone
Countryman B6W4FF05CSL, Shure: AXT100+, BLX1, FP1, GLXD1, PG1, PGX1, PGXD1, QLXD1, SLX1, UC1, ULX1, ULXD1, UR1, UR1M, (W4) Standard gain for most uses, (C) Cocoa, B6 Omnidirectional Lavalier Microphone
Countryman B6W4FF05LET, Electrovoice: 3000 Series, N/DYM NBPU, MSB, BPV, BPU, BPU2, CSB-1000, RE-1, RE-2, BP-300, (W4) Standard gain for most uses, (L) Light Beige, B6 Omnidirectional Lavalier Microphone
Countryman B6W4FF05WSL, Shure: AXT100+, BLX1, FP1, GLXD1, PG1, PGX1, PGXD1, QLXD1, SLX1, UC1, ULX1, ULXD1, UR1, UR1M, (W4) Standard gain for most uses, (W) White, B6 Omnidirectional Lavalier Microphone