Getting started

1. Waking up the earbuds and the charging case and charging the rechargeable batteries

Upon delivery, the rechargeable batteries of the earbuds and the charging case are in sleep mode and have to be woken up by connecting them to a USB power source once.

1.​Insert the earbuds into the charging case and close the lid of the charging case. Make sure that the earbuds are inserted correctly into the charging case. If the left and right earbud are inserted into the wrong charging compartment, the charging contacts of the earbuds will not make contact with the charging pins in the charging case. This will impair the charging process of the earbuds.

2.​Open the protective cover of the USB socket on the charging case and connect the USB-C cable to the charging case.

3.​Connect the cable to a USB power source (see page > Charging the rechargeable batteries using the USB cable) and charge the rechargeable batteries for at least 30 seconds.

The earbuds and the charging case are woken up and the rechargeable batteries are being charged. The earbuds are now ready for use.

Waking up the rechargeable batteries is only possible when a USB cable is connected to the charging case. The wireless charging function cannot be used to wake up the rechargeable batteries.

We recommend charging the earbuds and the charging case for a complete charging cycle without interruption before using for the first time.

2. Selecting suitable ear fins and transparent ear tips for optimum fit of the earbuds in the ears

The perceived sound quality including bass performance, the best possible noise cancellation, the best voice quality for phone calls and the secure hold of the earbuds in the ears depend to a large extent on the correct fit of the earbuds. Therefore, you can choose between ear fins and transparent ear tips in different sizes.

Test which ear tip size and which ear fins give you the best sound quality and the best wearing comfort. You can choose between 3 different transparent ear tips in size S, M and L and 4 different ear fins in size N, S, M and L (see page > Selecting suitable ear fins and transparent ear tips for optimum fit of the earbuds in the ears).

Information on changing the ear fins

•​If the ear tips are not fitted correctly, the subsequent charging process of the earbuds may be impaired as the charging contacts are not connected to the charging pins in the charging case.

•​Upon delivery, size M ear fins are attached to the earbuds. When changing the ear fins, first remove the existing ear fins.

You can find the detailed procedure for changing the ear fins here: page > Silicone ear fins

Information on changing the transparent ear tips

•​Only use the transparent ear tips supplied by Sonova Consumer Hearing to ensure that the sensors for body temperature measurement and heartbeat tracking work properly.

•​If the ear tips are not fitted correctly, the subsequent charging process of the earbuds may be impaired as the charging contacts are not connected to the charging pins in the charging case. In addition, the data collection of the sensor on the left earbud can be distorted.

•​Incompletely fitted ear tips may remain in the ear canal when the earbuds are removed from the ear.

You can find the detailed procedure for changing the ear tips here: page > Transparent silicone ear tips

Information on the correct insertion of the earbuds into the ears

Assign the right earbud to your right ear and the left earbud to your left ear.

Insert the earbuds at a slight angle into the ears and twist them into the ear canal so that they sit comfortably and snugly in the ear canal and auricle (see page > Inserting the earbuds into the ears).

You can use the Fit Test function in the Smart Control app to test the fit of the earbuds in your ears.

3. Attaching the finger strap to the charging case

Use the charging case in combination with the supplied finger strap to hold and transport your earbuds safely and comfortably.

To attach the finger strap to the housing of the charging case:

1.​Pass the thinner, flexible strap end through the grommet on the bottom of the charging case. To make insertion easier, you can use a SIM needle or a paper clip, for example.

2.​Pull the larger, sheathed strap end through the small strap end and pull it tight.

4. Connecting the earbuds to a Bluetooth device

When you switch on the earbuds for the first time after initial charging, they automatically switch to Bluetooth pairing mode. If the earbuds have not yet been paired with any Bluetooth device (the pairing list is empty), pairing mode remains permanently activated.

Connect the earphones to your smartphone via Bluetooth (see page > Pairing the earbuds with a Bluetooth device (pairing via Bluetooth Classic)).

5. Installing the Smart Control app on your smartphone

The Sennheiser Smart Control app allows you to use all functions and settings of the earphones and to e.g. adjust the sound to your liking using the equalizer (see page > Installing the Smart Control app).

–​Google Play Store: click

–​Apple App Store: click

6. Connecting additional Bluetooth devices

If desired, connect the earbuds to additional devices via Bluetooth (see page > Pairing the earbuds with a Bluetooth device (pairing via Bluetooth Classic)).

The earbuds can save the connection profiles of up to six Bluetooth devices with which they have been paired. Audio playback is only possible from one device at a time.

Using the Smart Control app (“Connection management”), you can view the list of paired devices and selectively connect and disconnect devices (see page > Switching the connection to paired Bluetooth devices/“Connection management”).

You can connect the earbuds to two Bluetooth devices at the same time, e.g. to a sports watch and your smartphone with a fitness app or to an indoor fitness bike and a sports watch.