Warranty & Compatibility & Note: 12 months worry-free warranty; Compatible with All Speaker Mics with 3.5mm Listen Only Audio Jack; Compatible with Speaker Mic of Motorola Commountain Kenwood Baofeng Icom Harris and more; This is not Intrinsically Safe earpiece, Don't use it in hazardous areas; This is not water-proof earpiece, Don't use it under humid environment and rainy day. | Classic Earhook: Classic and comfortable G shape Thermoplastic Elastomer earhook produced by precision molding technology which bring earhook more shape-stability and durability; Earbud rod is rotatable to fit right or left ear and adjustable vertically to fit different size of ears. | Clear sound transmission: With high quality micro speaker, high purity copper wire and anti-Interference circuit design, this earhook earpiece ensure sound to be received and transmitted clearly even in loud environment. | 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 excellent tensile strength; Strain relief structure made of TPU rubber bring stronger bending strength and longer lifespan. | High Strength Precise Connector: With TPU (Thermoplastic polyurethane) rubber jacket, internal hard core and gold-plated POGO-pin, assembled by precise soldering technology and molding technology, the connector is built for stable connectivity and excellent operating life.