Bt31 Bluetooth for helmet

Here’s a detailed overview of the BT‑31 Bluetooth Helmet Headset, a universal, budget-friendly communication device tailored for riders:

📡 Connectivity & Compatibility

• Bluetooth 5.0 + EDR, offering a solid wireless range (~10–15 m) for pairing with smartphones and even basic intercom use between two riders .

• Supports dual-phone connections, allowing music from one device and GPS instructions or calls from another .

🎤 Audio & Voice Control

• Equipped with a noise-cancelling mic, available in two styles (soft/hard), fitting a range of helmet types—including full‑face, modular, and off‑road .

• Features voice prompts (“Power on,” “Connected,” “Disconnected”) to aid operation during rides .

• Includes an automatic call answering option and Siri/Google Assistant activation via button press .

🔋 Battery & Charging

• Houses a 3.7 V, 1000 mAh Li‑ion battery, delivering 30–40 hrs of talk/music time and up to 300 hrs standby .

• Takes approximately 5 hours for a full recharge at 5 V via micro-USB or USB-C .

🛠 Durability & Ergonomics

• Built with an IP67 waterproof rating (or IPX6 in some listings), protecting it from rain, dust, and rough weather .

• Includes both clip and adhesive mounts, with compact dimensions (~95 × 50 × 30 mm) and ~210–230 g weight .

⚙️ Functions & Controls

• Music control: play/pause, next/previous track; Intercom pairing for up to two riders; flashlight toggle via “B” button .

• Automatic pairing after disconnection ensures seamless re-connection .

• Voice assistant support and last-number redial included .