Durable battery: Walkie Talkies is equipped with a 1500mAh lithium-ion battery, which supports use and charging at any time. The battery life is long. Generally, the battery life depends on the frequency of use and environment of the product., Diversified functions :FCC ID: 2AX68PX-888S, 16 preset channels can be selected by rotating the knob on the intercom to select any channel within the frequency range; you can program 50 CTCSS audio and 105 CDCSS audio on each programmed channel, The Two-Way Radios has the functions of VOX voice control, scanning, low battery alarm and night flashlight,etc, Long-Range communication : Walkie Talkies offer the greatest range in open, unobstructed areas, such as rural areas, suburbs, and the seaside. In towns and cities, range may be limited by obstacles. Actual range depends on the current obstruction level., Lightweight and compact, suitable for multiple scenes :Small size and light weight, Hard and durable shell, drop-proof, Rainproof, this Handheld two way radio transmitters are suitable for hotel management, villas, restaurant kitchens,outings,Outdoor mountain climbing, construction sites, factory warehouses, car driving, cruise ships, school,churches, retail stores and supermarkets, security personnel, construction personnel, safety maintenance personnel, Note:Compatible devices: Usually different brands and models cannot communicate properly because the privacy codes and frequencies of different models of walkie-talkies are inconsistentThe PX-888S walkie talkie buddies up with PX-666S, PX-777S, and PX-888S Pro models. They can team up and use the same programming tools and cables. (the programming cable needs to be purchased separately and is not included)