Two devices. One clear decision.

ADDITIONAL INFORMATION2 fields

Specification	TWS 4 Hi-Fi	Buds 4
Launch Price (USD)	$69.00 (reference only — see Price in Nigeria above for the actual retail price)	$64.00 (reference only — see Price in Nigeria above for the actual retail price)
Price in Nigeria	₦97,000 (Stored estimate)	₦90,000 (Stored estimate)

PRODUCT OVERVIEW5 fields

Specification	TWS 4 Hi-Fi	Buds 4
Brand	vivo	Xiaomi
Category	True Wireless Earbuds	True Wireless Earbuds
Launch Date	March 26, 2024	December 11, 2022
Model Name	vivo TWS 4 Hi-Fi	Xiaomi Buds 4
Price	CNY 499 (China-only, ~$69 USD converted)	~€59 global (~$64 USD); China CNY 349 (~$50)

AUDIO SPECIFICATIONS4 fields

Specification	TWS 4 Hi-Fi	Buds 4
Driver Size	12.2mm	—
Driver Type	Dynamic driver, ceramic tungsten diaphragm	Graphene dual-magnetic dynamic driver
Frequency Response	16Hz - 48kHz	—
Sound Features	Qualcomm S3 Gen 3 sound platform, spatial sound field engine, AI call noise reduction	360-degree spatial audio, Hi-Res Audio Wireless

FEATURES AND SOFTWARE7 fields

Specification	TWS 4 Hi-Fi	Buds 4
Active Noise Cancellation (ANC)	Up to 55dB adaptive ANC	Yes
App Support	vivo Earphones app	Xiaomi Earbuds app
Low-Latency / Gaming Mode	Yes, 44ms low-latency	—
Sound Modes	Multiple spatial sound modes plus ANC/transparency/normal	ANC / Transparency / Off
Touch Controls	Yes, touch/tap on stem	Yes, customizable via app
Transparency / Ambient Mode	Yes (included in ANC modes)	Yes
Voice Assistant Support	—	Google Assistant / Siri (via phone)

CONNECTIVITY AND INTEGRATION6 fields

Specification	TWS 4 Hi-Fi	Buds 4
Bluetooth Profiles	—	BLE, HFP, A2DP, AVRCP
Bluetooth Version	5.4	5.3
Multipoint	—	Yes, dual-device
Range	—	10m (open space)
Supported Codecs	LDAC, aptX Lossless, aptX Adaptive, AAC, SBC, LC3	SBC, AAC, LHDC 5.0
Wired Mode	—	Not supported

BUILD AND DESIGN6 fields

Specification	TWS 4 Hi-Fi	Buds 4
Colors Available	Ultimate Blue, White	White, Black, Green
Dimensions	Earbud ~21.77 x 23.19 x 30.26mm; Case 60 x 24 x 46mm	—
Form Factor	Semi-in-ear, compact	Semi-in-ear (open-fit stem)
Ingress Protection	—	IP54
Materials	ABS plastic body	Plastic housing
Weight	4.8g per earbud; case ~42.5g	—

BATTERY CAPACITY AND CHARGING3 fields

Specification	TWS 4 Hi-Fi	Buds 4
Charging Port	USB-C	USB-C
Device Battery Capacity	54mAh per earbud	30 mAh per earbud; 480 mAh case
Total Playtime	Up to 45 hrs with case (ANC off); ~26 hrs (ANC on)	6 hrs; up to 30-36 hrs with case

MICROPHONES AND VOICE FEATURES3 fields

Specification	TWS 4 Hi-Fi	Buds 4
Hands-Free Calls Support	Yes	Yes
Mic Count	3 mics per earbud	3 per earbud
Mic Type / Noise Reduction	AI-enhanced call noise reduction, multi-mic array	AI call noise cancellation

BOX CONTENTS6 fields

Specification	TWS 4 Hi-Fi	Buds 4
Charging Cable	USB-C cable	USB-C cable
Ear Tips (if earbuds)	—	Semi-in-ear, open-fit
Extras (cases, clips, mounts, etc.)	Charging case	Charging case
Main Device	2x earbuds	2x earbuds
User Manual	Included	Yes
Warranty Card	Included	—

COMPATIBILITY3 fields

Specification	TWS 4 Hi-Fi	Buds 4
Operating Systems	Android, iOS	Android, iOS
Profiles Supported	—	HFP, A2DP, AVRCP, BLE
Supported Devices	Bluetooth 5.4/BLE-capable devices; best on vivo/OriginOS	Bluetooth 5.3+ smartphones/tablets

KEY HIGHLIGHT1 field

Specification	TWS 4 Hi-Fi	Buds 4
Highlight	vivo's 2024 Hi-Fi flagship — Qualcomm S3 Gen 3 sound, aptX Lossless/LDAC support, and up to 55dB ANC at an affordable China launch price.	Affordable sibling to the Buds 4 Pro — ANC, IP54, and Hi-Res LHDC 5.0 in an open-fit design at a budget global price.