Main Features:<br />BST - 558 UV 128 - channel rechargeable walkie talkie with dual band / display / standby <br />Water and shock resistance<br />Battery: 7.4V 2300mAh<br />Standby time: 120 hours<br />Working time: 24 hours<br />Encryption: CTCSS， DCS <br />Charger: 100-240V <br />PC Material<br /><br />    Specifications<br />General<br />  Main Functions : CTCSS/DCS                                                 <br />Specification<br />  Frequency Range : 136-174MHz; UHF: 400-520MHz; Radio: 65-108MHz                                                  <br />                        Intercom Distance : 0-18km (Depends on the environment )                                                  <br />                        Memory Channels: 128                                                  <br />                        Voltage : 7.4 V                                                  <br />                        Frequency Stability : ± 2.5 ppm                                                 <br />Transmitting<br />  Spurious Power: 1 or 6 W                                                 <br />Dimension and Weight<br />  Product Weight  : 0.22 kg                                                  <br />                        Package Weight  : 0.54 kg                                                  <br />                        Product Size (L x W x H)  : 21.8 x 6 x 3.5 cm / 8.6 x 2.4 x 1.4 inches                                                  <br />                        Package Size (L x W x H) : 24 x 23 x 5 cm                                                 <br />Package Contents<br />  Package Contents: 1 x Walkie Talkie， 1 x Antenna(13cm)， 1 x Speaker Clip， 1 x Charge Docking (10V)， 1 x US plug Charger (100-240V / 100cm)， 1 x 7.4V 2300mAh Battery， 1 x Strap， 1 x Users Manual in English                                                 <br /><br /><br /><br />                                            <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />                       Product Safety Disclaimer: <br />We do not accept any responsibility or liability for misuse of this or any other product.  All our products are extensively tested to comply with rigorous and strict QC standards.  For certain products (e.g. toys， knives， etc.)， we recommend proper supervision as we cannot be held liable for misuse or accidents.<br /><br />                                                <br />