Main functions of the host: 1. High transparency and high hardness crystal panel, digital full-color and high brightness 2.8-inch TFT display. 2. Audio formats: Supports MP3, WAV, WMA, FLAC, APE, DTS, AAC, AC3, OGG, etc., and supports LRC display. 3. Video format: Supports MPEG-1/2/3/4, RM/RMVB, WMV, MOV, MK, VOB, AVI, 3GP, H.264, etc. 4. Radio function: Built in full digital automatic FM radio, with 30 radio channels stored. 5. Photos: Supports photo browsing in formats such as JPEG, BMP, GIF, PNG, etc. 6. Bluetooth function: Supports matching mobile phones with other external Bluetooth devices for audio playback, supports manual and automatic Bluetooth activation (suitable for hotel use). 7. External audio input: Supports external audio input machines for amplifying output. 8. Support video output: Supports 720P high-definition video output to TV. 9. Time calendar: Supports clock and calendar display functions. 2.8-inch Display, 320 x 240 Resolution Key Touch Power Supply Mode: AC 110-250V Output Power: 2 x 15W(Digital power amplifier) Audio Inputs one set; Output one set Video Player Timing output: one set Bluetooth: 4.0 Bluetooth working distance: 10 meters Infrared remote control distance: 10 meters Frequency response: 20Hz-20KHz T.H.D: 0.03% SNR: 98dB Installation: 86 standard wire box, front wall Product size: 86 x 86 x 10mm Wire Box Opening Size: 86 x 86 x 57mm Color: White/Gold The horn parameters are as follows: 308A Specification: 3'' Fashion Ceiling Speaker Moisture-proof plastic ceiling speaker with cover Power: 10W/8 Sensitivity: 89dB 3'' Full range speaker driver Plastic case with rear cover Installation Cutout Size: 100mm Product Size: 115x80mm Net Weight: 340g Gross Weight: 420g