Radio trailers effectively advertise products through sound since visuals are absent. They are typically 30-40 seconds, using a clear voiceover that narrates the product, asks questions about it, mentions where it can be bought, and includes the slogan. Sound effects and music are sometimes included to reinforce the message. Memorable jingles or terms and conditions may also feature to leave a lasting impression without visuals.

2. Radio trailers are used to advertise certain things on the radio, the use of sound
effects and narrative is extremely important so that the point of the advert comes
across due to the lack of visual aid.There are conventions which are typical of many
radio adverts which are stated below.
• Approximate length of 30 - 40
seconds
• Voiceover narrating what the product
is (outline only)
• Voiceover asks questions that can be
answered in relation to the product
• Mention where the product is sold
• Slogan of the product

3.  Sometimes humour in the script
 Usually the volume of the voiceover gets louder in the middle and then fades out towards
the end
 Poses rhetorical questions to the audience to make them think
 Occasionally a music bed will be used (music will be played in the background behind the
voiceover.
 Sound effects used to reinforce meaning behind what is being said
 Clear voices
 Terms and conditions sometimes at the end of the advert
 Some sort of memorable jingles which stay in your head afterwards