1. Unlimited creation of units, each unit can create 200 groups. 2. Customizable, intercom, unit, group name. 3. Customized intercoms are mainly voice-based. 4. Enterprise-level end-to-end encryption 5. The location of intercoms with GPS positioning can be seen on the management platform Intercoms can make calls across borders, no , free intercom platform. Intercoms are compatible with SIM cards from 72 countries. Lower data consumption Version: European and American version Frequency band: 4GLTE B2/3/4/5/7/12/13/17/25/26/38/41/42 Colour:Black Material:ABS Package Contents: 1x walkie-talkie 1x charger 1x back clip Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.