Whether you’re planning on listening to music or making calls, Sony has labelled its latest wireless headphone duo as perfect for either audio form.

Sony's DR-BT101: over-ear Bluetooth headphone option

The DR-BT100CX and DR-BT101 are essentially the same thing: Bluetooth headphones capable of streaming music and voice calls from your handset into your ears. The main difference though is that BT100CX sports an in-ear design and BT101 looks like traditional headphones.

But several technical differences hide under their differently shaped exteriors. For example, the BT100CX earphones have 9mm driver units inside and are capable of a frequency response of 6Hz-23kHz, while the BT101 cans have more powerful 30mm driver units inside and a 14Hz-24kHz frequency response.

The duo both support Bluetooth 2.1, feature echo- and noise-cancellation technologies, have a 10m reception range and are compatible with four Bluetooth profiles: A2DP, AVRCP, HFP and HSP.

The DR-BT100CX: charges more quickly, but has a shorter battery life

Sony’s in-ear cans only take 2.5 hours to recharge, but you’ll have to wait for four hours before the BT101 headphones will be fully powered up. Unsurprisingly, the overhead model’s longer charge translates into 12 hours of life and 200 hours of standby time, compared to just eight hours' playback and 120 hours standby life on the BT100CX model. Both units are charged through USB.

User controls for the BT100CX headphones are built onto a small controller unit and the larger over-ear can’s buttons are built onto each earphone.

Sony said both models are available online now, but the firm’s website has no record of either yet. ®