Feature: 1. [4 Minutes Recording] The DIY sound recorder board can record music according to the guest's request, or whatever you want to say, for up to 4 minutes. 2. [Battery Powered] The recordable sound module is powered by 3 AAA batteries, 16 ohms 0.25 watt environmentally friendly speakers, and the sound is loud enough. 3. [Convenient Design] The length of the sound voice recording playback module cable is 10CM, the cable length is designed for your convenience and can be recorded repeatedly. 4. [Easy to Operate] This recording module has been welded with microphones, buttons, speakers, etc., and it can be used immediately after receiving the product, which is very convenient. 5. [Multipurpose] Recordable voice sound module can be used for Christmas cards, novel gift boxes, jewelry boxes, crafts, children's toys, etc. Specification: Item Type: Recording Module Material: PCB Speaker Size: Approx. 40 x 4mm/1.6 x 0.16in Circuit Board Size: Approx. 31 x 21m/101.7 x 68.9ft Line Length: Approx. 10cm/3.9in Recording Time: 4 Minutes Working Voltage: 3.0V-4.5V Battery Type: 3 x AAA Batteries (Not Included). Package List: 1 x Recording Module Note: Please allow some errors due to manual measurement.