Warranty & Compatibility: Worry-free 18 months warranty; Compatible with Motorola Vertex VX EVX series radios; Including VX-160 VX-180 VX-210 VX-231 VX-261 VX-264 VX-351 VX-354 VX-410 VX-420 VX-424 VX-450 VX-451 VX-454 VX-459 EVX-261 EVX-531 EVX-534 EVX-539 and more Rugged Construction: With high impact-resistant engineering Polycarbonate plastic housing, SMT electronic board, internal vibration absorption system, stainless steel detachable 360-degree rotatable heavy duty clip, combined with precise molding technology, this speaker microphone is built for tough mission critical use and is built to withstand knocks and bumps. Super Strength Cable Module: TPU (Thermoplastic polyurethane) cable bring super bending strength, abrasion resistance and scratch resistance; Cable internally reinforced by high tensile strength fiber and Kevlar fiber bring stronger tensile strength; Strain relief structure made of TPU rubber bring stronger bending strength and longer lifespan. Cl