Unlike traditional in-ear earbuds, MTB-BL31 adopts an open-ear wearable design that does not block the ear canal. This helps reduce discomfort caused by long-term wearing and makes the earbuds suitable for extended use throughout the day.
The soft TPU silicone ear hooks provide a secure yet comfortable fit, while the refined hand-feel oil finish gives the product a smooth and premium touch.

Powered by the AB5656C chipset, MTB-BL31 supports Bluetooth V6.0, offering stable connectivity, lower power consumption, and smooth wireless performance.
It is compatible with Bluetooth 5.0 and above devices, making it suitable for most smartphones, tablets, laptops, and other Bluetooth-enabled devices in global markets.

Its open-ear acoustic structure allows users to enjoy audio while remaining aware of traffic, conversations, and surrounding sounds. This makes it especially practical for commuting, running, cycling, office use, and other scenarios where safety and awareness matter.

The integrated side touch controls make operation simple and convenient. Users can control music playback, adjust volume, answer calls, and activate the voice assistant with a simple touch.
The hands-free control experience is ideal for sports, commuting, and office scenarios.

Supports OEM and logo customization, helping customers build their own branded audio product lines.
With retail-ready gift box packaging and stable production lead time, MTB-BL31 is suitable for wholesale distribution, e-commerce sales, gift channels, and mobile accessory retail markets.

| Product Name | Wireless Earbuds With Ear Hooks |
| Model | MTB-BL31 |
| Bluetooth Version | V6.0 (Chipset: AB5656C) |
| Audio Decoding | SBC / AAC |
| Structure | TPU Silicone Ear-hook (Open Wearable Stereo) |
| Earbud Battery | 35mAh Lithium Polymer |
| Charging Case | &350mAh Lithium Polymer |
| Playtime | Approx. 5.0 Hours (80% Volume) |
| Charging Time | Approx. 2 Hours |
| Interface | Type-C with OVP Support |