How big are the buds, as I have very small ears!

Hi Mrs R, The headphones are supplied with 3 sizes of earbuds; small, medium and large. You can find more information about this here: http://bit.do/fuXEA (copy and paste the link into your web browser). Sony Support Team

Are these compatible with Apple Watch 3?

Hi, The headset supports Bluetooth version 5.0, and the following Bluetooth profiles: A2DP, AVRCP, HFP, HSP. You can find more information in the Help Guide here: http://bit.do/ftx9p (copy and paste the link into your web browser). Sony support team

Can headphones connect to 2 devices? Like laptop and mobile phone at the same time?

Apparently cannot.... I have just tried connecting to my Samsung tablet, Apple mini ipad and Samsung A40 Android smartphone. It can just connect one at a time....

Does this work on mp3 player 16gb with bluetooth 5 (tws function), musrun quality music player?

Hi Bridget, The headphones feature Bluetooth v5.0 and support the following profiles: A2DP, AVRCP, HFP and HSP. You can find the full specifications here: https://clc.to/gSBbYA (copy and paste the link into your web browser). Sony support team

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Sony WI-XB400 Extra Bass Wireless In-Ear Headphones - Blue

Product ID: 158060928

Details

Brand
Sony
Colour
blue
Connectivity technology
Bluetooth
Ear placement
In Ear
Form factor
In Ear
Headphone jack
3.5 mm Jack

🔊12mm driver for deep bass

🔋15 hours nonstop playback

🧲Magnetic earbuds for tangle-free

Description

🎧 Elevate your sound game with Sony’s bass-packed wireless freedom!

POWERFUL EXTRA BASS - Feel every beat with Sony’s signature 12mm drivers delivering rich, punchy lows without sacrificing clarity.
LIGHTWEIGHT COMFORT FIT - Weighing just 35g, these earphones seal comfortably in your ears without bulky fittings, perfect for active lifestyles.
ALL DAY LISTENING FREEDOM - Up to 15 hours of wireless playback means your soundtrack never stops, from morning meetings to evening jogs.
CLEAR CALLS VOICE CONTROL - Integrated mic and voice assistant support keep you connected and hands-free with crystal-clear call quality.
TANGLE FREE MAGNETIC DESIGN - Magnetic earbuds snap together for effortless cable management—stay sleek and organized on the go.

Sony WI-XB400 wireless in-ear headphones combine powerful 12mm drivers for extra bass, a long-lasting 15-hour battery, and magnetic earbuds for easy cable management. Lightweight and water-resistant, they offer a comfortable fit and clear hands-free calling, making them ideal for professionals and active users seeking premium sound on the move.

Specifications

ASIN	B07X5Y3VWN
Age Range Description	Adult
Antenna Location	[PI] Listen to music, hands-free calling, possibly suitable for sports and travel
Audio Driver Size	12 Millimetres
Audio Driver Type	Dynamic Driver
Battery Average Life	15 Hours
Battery Charge Time	15 Hours
Best Sellers Rank	2,046 in In-Ear Headphones
Bluetooth Range	10 Metres
Bluetooth Version	5.0
Box Contents	WI-XB400 EXTRA BASS wireless in-ear headphone blue, USB Cable
Brand Name	Sony
Cable Features	Without Cable
Colour	blue
Compatible Devices	[Many]
Control Method	Voice
Control Type	Assistant, voice
Controller Type	Assistant, voice
Customer Reviews	4.1 4.1 out of 5 stars (5,918)
Earpiece Shape	Round
Enclosure Material	Faux Leather
Frequency Range	20Hz - 20,000Hz
Global Trade Identification Number	04548736101265
Headphone Form Factor	In Ear
Headphone Jack	3.5 mm Jack
Headphones Ear Placement	In Ear
Impedance	16 Ohms
Is Autographed	No
Item Weight	35 Grams
Manufacturer	Sony
Model Name	Sony WI-XB400 EXTRA BASS™ wireless in-ear headphones, 15 hours battery life, in-line remote, hands-free call, voice assistant
Model Number	WIXB400L.CE7
Network Connectivity Technology	Bluetooth
Noise Control	Sound Isolation
Number of Items	1
Product Features	Volume Control
Specific Uses For Product	Music
Style Name	Single
Theme	Music
Unit Count	1.0 count
Water Resistance Level	Water Resistant
Wireless Technology Type	NFC

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