Warranty & Compatibility & Note: Worry-free 12 months warranty; Compatible with Motorola CLS DLR DTR RDX RM VL series radios; Including CLS1401 CLS1110 DLR1020 DLR1060 DTR550 DTR600 DTR650 DTR700 RDU2020 RDU2080D RDV2020 RDV2080D RDU4100 RDU4103 RDU4160D RDU4163D RDV5100 RMU2040 RMU2043 RMM2050 RMU2080 RMU2080D RMV2080 VL50 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. Professional Acoustic Tube Module: Super quality TPU acoustic tube provide durability and flexibility; Ear-hook and elastic coil made by precise forming technology makes your wearing more comfortable; Acoustic tube joints made of anti-cracking & wear-resistant plastic bring reliability and prevent scratching; High performance micro speaker and acoustic tube ensure sound to be transmitted clearly even in loud environment; A variety of accessories meet different ear wearing cho