Warranty & Compatibility & Note: 12 months worry-free warranty; Compatible with Motorola radios XPR 3500e, XPR 3300e, XPR 3500, XPR 3300 (XPR3500e XPR3300e XPR3300 XPR3500); 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, noise reduction microphone, 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