Economy Range Motorola DP4000e Series 2 Wire Acoustic Tube EarpieceEconomy Range Motorola DP4000e Series 2 Wire Acoustic Tube Earpiece Economy Plus Motorola DP4000 series 2 wire acoustic tube earpiece with lapel microphone and push to talk button. The Economy Range Motorola DP4000e Series 2 Wire Acoustic Tube Earpiece is a no frills, dependable option for professionals who require clear and discreet radio communication throughout the working day. Built for compatibility with the Motorola DP4000e range, it connects