ACEFAST K4Go Portable Wireless Speaker – Specifications

Product Name: ACEFAST K4Go Portable Wireless Speaker
Bluetooth Version: v5.4
Transmission Distance: ≥10m
Frequency Response: 60Hz–20000Hz
Battery Capacity: 900mAh / 3.7V
Input: DC 5V⎓0.86A (USB-C)
Charging Time: 1.5 hours
Working Time: Up to 8 hours (music mode at 50% volume)
Speaker Units:

• 45×45mm full-range driver

• 35×60mm passive bass diaphragm
  Power Output:

• Rated: 4W

• Peak: 5W
  Dimensions: 100×40×78mm
  Weight: 200g
  Waterproof Rating: IPX7
  Features: TWS dual-speaker pairing, portable strap, lightweight and travel-friendly design

Product Description

Experience powerful, crystal-clear audio wherever you go with the ACEFAST K4Go Portable Wireless Speaker, now available at Sharabir Gadgets. Designed for music lovers who demand portability without compromising sound quality, the K4Go features a high-performance 45mm full-range driver paired with a bass-boosting passive diaphragm—delivering rich mids, crisp highs and surprisingly punchy bass for its size.

Equipped with the latest Bluetooth 5.4 technology, it ensures stable, low-latency wireless connectivity with a range of over 10 meters. Its 900mAh battery provides up to 8 hours of continuous playtime, and with its fast USB-C 1.5-hour charging, you’re always ready to go.

Built for adventure, the IPX7 waterproof rating lets you enjoy music by the pool, at the beach, or on the go—rain or shine. Pair two units using TWS mode for a full stereo sound experience. Weighing just 200 grams and equipped with a convenient strap, the ACEFAST K4Go is the perfect companion for travel, outdoor activities, or everyday use.