USB bluetooth 5W MP3 player with chargeable for teddy toy
plush toy sound module bluetooth MP3 player for teddy toy bluetooth electronic device for plsuh toy

 bone conduction transducer RC-BC16 

 20W stereo amplifier SL-A08-A  bird sound player

RC-BC23 9.5ohm small size bone condutor for headphone

 RC-BC28 10ohm 1W bone conduction speaker for sport headphone

 RC-BC31 bone conduction transducer for wearable products

 RC-BC27 8ohm 0.8W bone conduction transducer 

 RC-BC22A Bone transducer 8Ω1.5W

 9.5ohm 0.15W bone conduction transducer for headphone.with small size

 MAX9744 2*20W class D Amplifier board @8ohm sopport software debug

2*15W Bluetooth 4.0 Exciter Soundsystem with transducer

 2.1 bluetooth amplifier board with volume control 2*15W+30W