Compatible with Motorola CP88, CP040, CP185, DP1400, CLS1110, CLS1410, VL50, RDM2070D, DLR1020, DLR1060, RDU4100, BPR400, Mag One etc. PTT(Push To Talk) with built-in line mic microphone Compatible for Motorola Radio;The back clip can help fix the PTT position Anti-noise: The Soft plastic D-shaped earhook; Soft rubber earhook gives you a comfortable feeling Professional and pleasing. Comfortable to wear.Excellent for use in police, military, nightclubs, bars, paintball, security, restaurants, hotels, bouncer, warehouses, and noisy environments This earpiece compatible with Motorola 2 Ppin d shape earpiece is made from high quality a component that makes it highly durable and lightweight