Thank you Ugreen for sending over their True Wireless Stereo CM338 for review.

Lazada product page: CM338
Aliexpress product page: CM338


Specifications & features
Bluetooth Chip: PixArt PAU1603
Supported Decoding Mode: SBC/AAC
Operating Distance: Up to 10m
• Touch Control
• Bluetooth 5.0
• Sweatproof

• Frequency: 20-20000Hz
• Battery Capacity: Earbuds: 30 mAh; Charging case: 480 mAh
• Charging Time: Earbud: 60 mins; Charging case: 2 hours
• Play Time: Earbud: up to 3 hours; Charging case: up to 18 hours


The box


Open box



• CM338 with charging case
• 3 pairs of ear tips (S, M, L)
• Micro USB charging cable
• User manual


CM338 with charging case


Ear tips


Micro USB charging cable


User manual




Final thoughts
The CM338 is simply excellent. The build quality of it is good. The glossy black finish is a fingerprint magnet.

The bass is just nice but not too heavy. The lows and mids are great. 

Tested gaming with COD Mobile and PUBG Mobile with minimal lag.

I hope the next Ugreen TWS comes with aptX.


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