1.Complete voice call functions: single call, all call, group call 2.Wireless data WLAN connection: connect to WIFI by searching nearby networks 3.Wireless data Bluetooth connection: realize Bluetooth device connection and pairing 4.GPS positioning: precise positioning, grasp the 's position at any time 5.Long standby time: 5600mAh lithium battery Product parameters: Size:108x58x30mm Weight:166g Screen:1.77 inches, 128*160 CPU:MSM8909 RAM:4Gbit ROM:4GByte OS:Android 5.1 language:English WIFI:IEEE802.11 b/g Bluetooth:Bluetooth 4.1 GPS:GPS/AGPS USB:2.0 SIM type:-SIM Network : European version:GSM:Band2/3/5/8;WCDMA:Band1/2/5/8;TDD-LTE:Band38/40;FDD-LTE:Band1/2/3/5/7/8/20/28 Colour:black Material:ABS Package Contents: 1 x walkie-talkie 1 x USB charging cable 1 x Back clip 1 x Lanyard 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.