SYSTEM COMPATIBILITY: MIVOICE BUSINESS, MIVOICE OFFICE, MIVOICE MX-ONE AND MIVOICE 5000 Dimensions (l x w x d): 137 × 52 × 21 mm Weight: 135g (battery and clip included) 240 × 320 pixel LCD color screen with white backlighting 3 programmable soft keys 9 programmable hot keys Push button alarm Up to 1000 entries with company phone book Up to 250 entries in local phone book 14 ring signals, flashing LED and vibrator Supports WiFi 802.11 a/b/g/n/ac standards Hearing Aid Compatible (HAC) Bluetooth 5.0