Power source:

DC 3.85 V: Built-in lithium-ion rechargeable battery

DC 5 V: When charged using USB

Operating temperature:

0 °C to 40 °C (32 °F to 104 °F)

Charging time:

Approx. 1.5 hours (headset)

Approx. 3 hours (charging case)


Approx. 7.3 g × 2 (0.26 oz × 2) (headset only (including M size of earbud tips))

Approx. 41 g (1.45 oz) (charging case)

Communication specifications

Communication system:

BLUETOOTH Specification version 5.2


BLUETOOTH Specification Power Class 1

Maximum communication range:

Line of sight approx. 10 m (30 ft) (*1)

Radio frequency:

2.4 GHz band (2.4000 GHz to 2.4835 GHz)

Compatible BLUETOOTH profiles (*2):


Supported codec (*3):




Transmission bandwidth (A2DP):

20 Hz to 20,000 Hz (with 44.1 kHz for sampling)

20 Hz to 40,000 Hz (with LDAC 96 kHz for sampling, at 990 kbps)

*1 The communication range is a rough estimate. The communication range may differ depending on surrounding conditions.

*2 BLUETOOTH standard profiles indicate the purpose of BLUETOOTH communication between devices.

*3 Audio signal compression and conversion format

Design and specifications of the headset are subject to change without notice.

Compatible iPhone/iPod

iPhone SE (2nd generation), iPhone 11 Pro Max, iPhone 11 Pro, iPhone 11, iPhone XS Max, iPhone XS, iPhone XR, iPhone X, iPhone 8 Plus, iPhone 8, iPhone 7 Plus, iPhone 7, iPhone SE, iPhone 6s Plus, iPhone 6s, iPhone 6 Plus, iPhone 6, iPhone 5s, iPod touch (7th generation), iPod touch (6th generation)

* As of February 2021


  • The charging time may differ depending on the conditions of use.