Transmission range: 10 meters
Function: Battery display, voice control, call function, support music, multi-point connection
Color: [S4-Z] Black (Chinese version),[S4-Z] Blue (Chinese version),[S4-Z] Yellow Green (Chinese version),[S4-Z] Red (Chinese version),[S4 -Y]Black (English version),[S4-Y] Blue (English version),[S4-Y] Yellow Green (English version),[S4-Y] Red (English version),[X7-PLUS] Black (Chinese and English switch),[X7-PLUS] red (Chinese and English switch),[X7-PLUS] blue (Chinese and English switch),[H916] black (Chinese and English switch),[H916] silver (Chinese and English switch) , [H916] pink (Chinese and English switch),[IX] black (Chinese and English switch),[IX] red (Chinese and English switch),[IX] black red (Chinese and English switch),[IX] white powder (Chinese and English switch ),[M2-E] white (switch between Chinese and English),[M2-E] blue (switch between Chinese and English),[M2-E] red (switch between Chinese and English),[M2-E] gold (switch between Chinese and English) , [M9-E] black (Chinese and English switch),[M9-E] red (Chinese and English switch)