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Main requirements: * Device should sit behind the ear on the mastoid bone area * Hidden inside hair so almost invisible during normal use * Very lightweight and comfortable for long use * Bone conduction vibration only for wearer * Minimal sound leakage to nearby people * Bluetooth connectivity with mobile phone * Rechargeable battery * Compact charging system (USB-C preferred) * Smallest possible size I want two possible designs: 1. Fully self-contained unit behind ear (battery + Bluetooth + transducer all together) 2. Ultra-small transducer behind ear with separate battery/control module hidden in collar/pocket connected by thin wire Needed help: * Component selection * Circuit design * PCB design * Battery optimization * Small enclosure design * Comfortable mounting method (skin tape, magnetic clip, hair clip, etc.) * Prototype development Preferred features: * Clear voice audio * Low latency * 2–3hour battery backup minimum * Safe temperature during use * Android/iPhone compatibility Please also suggest: * Best bone conduction transducer size/type * Best Bluetooth audio module * Approximate total size possible * Estimated cost for prototype I want the design to be extremely discreet and wearable daily.
Project ID: 40457183
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3 freelancers are bidding on average ₹6,667 INR for this job

I am excited to help you develop an innovative bone-conduction device that meets your specifications for discretion, comfort, and performance. With a strong background in electronics and product design, I will ensure that the device is lightweight, has minimal sound leakage, and features reliable Bluetooth connectivity. My approach will include thorough requirements clarification, component selection, and circuit design to create two viable prototypes: a fully self-contained unit and an ultra-small transducer option. I will focus on battery optimization to ensure at least 2-3 hours of backup while maintaining safe operating temperatures. I will also explore comfortable mounting methods and design a compact enclosure that is both aesthetically pleasing and functional. Additionally, I will provide you with recommendations for the best bone conduction transducer and Bluetooth audio module, along with size estimates and cost projections for the prototype. I am committed to delivering high-quality results while keeping communication open throughout the project. Let's create a discreet, wearable solution that revolutionizes audio experiences!
₹7,000 INR in 14 days
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Hi , This is a brilliant product concept. Designing an ultra-discreet, mastoid-sited bone conduction wearable requires a precise balance of micro-electronics integration, acoustic isolation (to prevent sound leakage), and ergonomic thermal management. Our team specializes in hardware prototyping, custom PCB development, and product enclosure styling. We can completely architect, design, and deliver both requested configurations (the fully self-contained unit and the split module wire architecture) for your evaluation.
₹10,000 INR in 10 days
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Hi, **Very interesting idea.** A discreet mastoid-mounted bone conduction device hidden behind the ear is absolutely achievable, and I believe the second architecture (ultra-small transducer behind the ear with a separate battery/Bluetooth module in the collar or pocket) offers the best balance of comfort, size, battery life, and minimal sound leakage. My background includes embedded systems, PCB design, wireless communication, sensor integration, and product prototyping. I secured **1st Prize (₹10 Lakhs) at Gujarat RoboFest** as the sole winner among 2000+ teams and achieved **AIR 2 in the e-Yantra Robotics Competition (IIT Bombay)**, where I worked extensively on compact electronics, embedded hardware, power optimization, and real-world system integration. I will provide practical recommendations for: • Transducer type and dimensions • Bluetooth SoC/module • Battery capacity and charging system • Estimated prototype cost • Expected overall dimensions for both design approaches I would be happy to discuss the target form factor and prioritize either maximum concealment, audio quality, or battery life before starting. Best regards, **Priyansh Agrawal** Electronics, Embedded Systems & PCB Design Engineer
₹3,000 INR in 4 days
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Pune, India
Member since Aug 1, 2025
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