Model:C-1	Side length of square hole：12cm Height：24cm　Weight：600g　Power：10W Degree of distortion：≤5% Voltage：6V（four batteries of No.1 size） The application field ：suitable for medium size tourist group and at small meetings.	F model business megaphone equipped in car	Diameter：13cm Hdight: 15cm Weight：610g Power：5W　　　　Voltage：match with car 12v accumulator,or use eight batteries　Function features：with sound amplification and music functions，suitablefor business buses and cleaning water spraying trucks.
Model:H-1	Diameter：19.5cm　Height：30cm　　Weight：1200g　　　Power：20W　　　Degree of distortion：≤5%　Voltage：12V（eight batteries of No.5 size）　　Function features：with extra length of horn,luxurious and grand, super power, sound scope over 300 meters, no whistler noise, suitable for army and police use, large and medium-size tourist group use and at meetings.	Model:K-1	Diameter：12cm　　Height：24cm Weight：510g Power：5W Degree of distortion：≤5% Voltage：6V（four batteries of No.2 size） Function features:clear voice, small volume, portable,suitable for small size tourist group and market promotion use.
Model:K-2	Diameter：9.5cm　Height：16.5cm　　Weight：410g　　　Power：5W　　　　Degree of distortion：≤5%　Voltage：6V（four batteries of No.5 size）　　　　Function features: latest design ,extremely small volume,easy to sue,clear voice, application field is the same as K-1。	Model:M-1	Diameter of mouth：15cm　Height：24.5cm　　Weight：600g Power：10W Degree of distortion：≤5% Voltage：6V（four batteries of No.1 size） Function features: grand fashion, large power, with external microphone, suitable for medium size tourist group and at mall meetings.
Model:M-2	The same as M-1,With foldable handgrip,many specifications,such as 10s and 20s recording, and with recharge battery.	Model:T	Diameter：19.5cm Height：33cm Weight：1150g Power：20W Degree of distortion：≤5% Voltage：6-9V（four batteries or six batteries of NO.1 size） Function features: suitable for army and police use, large and medium size tourist group use and at meetings.
Model:T-2	The same as T model,with foldable handgrip.	Model:T-3	Diameter：19.5cm　Height：33cm　　Weight：1250g　Power：20W　　　　Degree of distortion：≤5%　Voltage：6V（four batteries of NO.1 size） Function features: with extra length of horn, luxurious and grand, super power, sound scope over 300 meters, no whistler noise, equipped with external microphone, with foldable handgrip, suitable for army and police use,large and medium-size tourist group use and at meeting.
Model:X20"recording	Diameter：15cm　Height：24.5cm　　Weight：600g　　Power：10W　　　　Degree of distortion：≤5%　Voltage：6V（four batteries of NO.1 size） Function features:With recording sound amplification,sound playing and music functions,20 second recording,continuous sound-playing, memorable even in breakage,suitable for samll and medium tourist groups and at meeting.	Model:K-4	Diameter：9cm Height：14.5cm Weight：250g Power：5W Degree of distortion：≤5% Voltage：9V（Six batteries of NO.5 size） Function features: Latest elesingn, extremely small volume,easy to use,,clear voice.
K-5型腰包式喊话器	Weight：320g Power：8W Degree of distortion：≤5%　Voltage：DC 6-9V