Blitzz supports Bluetooth devices that use HSP (Headset Profile) or HFP (Hands-Free Profile). These profiles carry two-way, real-time audio, which is what voice and video calls need.
Bluetooth profiles compared
| Profile | Best for | Audio direction | Works for Blitzz calls? |
|---|---|---|---|
| HSP (Headset Profile) | Wireless headsets with basic controls | Two-way | Yes |
| HFP (Hands-Free Profile) | Car hands-free systems; supports voice dialing and call management | Two-way | Yes |
| A2DP (Advanced Audio Distribution Profile) | High quality music and media streaming | One-way | No |
Why HSP and HFP work best for calls
HSP and HFP are common in modern Bluetooth headsets. They have low latency and clear two-way audio. Their sound quality is lower than A2DP, but they're built for live conversation.
Why A2DP isn't suited to calls
A2DP streams high bitrate audio, which is great for music. It adds 100 to 150 milliseconds of delay and only sends audio one way, so it doesn't work well for real-time calls.
Frequently asked questions
Which Bluetooth headset should I use for Blitzz?
Any headset that supports HSP or HFP. Most modern Bluetooth headsets do.