Key Specifications

General

• Model: ACEFAST W4

• Type: TWS In-Ear Earbuds

• Bluetooth Version: 5.4

• Bluetooth Chipset: AB5656C3 / AB5656C32

• Audio Codecs: SBC, AAC

• Transmission Range: Up to 10 meters

• Water Resistance: IPX4 (sweat & splash-resistant)

Audio

• Driver Size: 10 mm ultra-thin composite diaphragm

• Frequency Response: 20 Hz – 20 kHz

• Noise Cancellation: ENC (for improved call clarity)

Battery & Charging

• Earbud Battery: 40 mAh

• Charging Case Battery: 350 mAh

• Earbud Playback Time: Up to 7 hours (approx., 50% volume)

• Total Playback Time with Case: Up to 28 hours

• Earbud Charging Time: About 80 minutes

• Case Charging Time: About 2 hours

• Charging Port: USB Type-C

• Fast Charge: 10 minutes charge → about 2 hours playback

Design & Build

• Case Feature: Built-in phone stand with 3 adjustable angles (vertical & horizontal)

• Materials: ABS + PC

• Case Dimensions: 57 × 57 × 24 mm

• Total Weight (Case + Buds): Approx. 37.6 g

• Available Colors: Multiple color options depending on region

In the Box

• 2 × Earbuds

• 1 × Charging Case (with phone stand)

• 3 × Eartips (S / M / L)

• 1 × USB-A to USB-C Cable

• 1 × User Manual

Product Description

ACEFAST W4 is a pair of stylish and lightweight True Wireless Stereo (TWS) earbuds designed for daily use, entertainment, and calling. It features ENC (Environmental Noise Cancellation) for clearer voice calls and comes with a unique charging case that doubles as a phone stand with adjustable viewing angles. Ideal for users who want portability, convenience, and clear audio communication.

Highlights

• Stylish TWS earbuds with unique stand case design

• Great for YouTube, movies, gaming, and calls

• ENC ensures clear voice quality

• Long battery life with 28 hours total backup

• Ideal product for mid-range budget customers