It has the same caracetrísticas the HT648, although not certified MED. IP68 protection. Built with materials resistant to impact, corrosion, dust, humidity and solar radiation. Notice low battery. Battery operated rechargeable lithium ion battery (not included), so you do not need to discharge the battery to recharge. Optional Handsfree (accessory required). Bluetooth: connect a Bluetooth accessory. Compatible accessories for VHF HT648 and HT649.