Ozlo Sleepbuds 2 vs SleepPhones Wireless by AcousticSheep

How they differ in real use

Built from our sleep earbuds for side sleepers scoring, each product's published specifications, and verified owner feedback — not hands-on testing.

Both the Ozlo Sleepbuds 2 and the SleepPhones Wireless by AcousticSheep made our Top 5 Sleep Earbuds for Side Sleepers, at #1 (best overall) and #5. The most comfortable choice for a side sleeper: at 1.6 g and about 11 mm tall, each bud is roughly half the weight of the Sleep A30's and sits flush in the ear, so there is less to press against the pillow. Its 14-hour battery covers a full night with streaming, where the A30 manages about 7.5 hours with ANC on in SoundGuys' measurement, and its 50+ masking sounds, private alarm and room-sensing case are all included free. It ranks above the A30 despite having no active noise cancellation because comfort and battery matter on every night, while ANC mainly matters next to a heavy snorer. Its $279 list price is the highest here. The most refined headband: flat speakers sewn into a soft pad, three band sizes, a fleece or cooler Breeze fabric and removable speakers for machine washing, plus a 24-hour rated battery, 10 hours more than the MUSICOZY or any earbud here. Reviewers at TechRadar, GearBrain and The Gadgeteer found it comfortable for side and stomach sleeping. It ranks last because it shares the MUSICOZY's lack of noise blocking, built-in sounds and alarm, costs several times more, still charges over micro-USB in about 4 hours, and its Amazon owner rating (about 3 stars) is well below the MUSICOZY's 4.2.

We score sleep earbuds for side sleepers on Side-Sleeper Comfort (25%), Noise Blocking (20%), Battery Life (15%), Sleep Features (15%), Reliability & Controls (10%) and Value (15%). On that basis the Ozlo Sleepbuds 2 totals 8.3 out of 10 and the SleepPhones Wireless by AcousticSheep 6.1. The widest gap is Sleep Features, where the Ozlo Sleepbuds 2 scores 9 against 3 for the SleepPhones Wireless by AcousticSheep: built-in masking sounds that play without a phone, a private in-ear alarm, sleep detection and tracking, all without a subscription. Noise Blocking also separates them: 7 for the Ozlo Sleepbuds 2 versus 3 for the SleepPhones Wireless by AcousticSheep. The SleepPhones Wireless by AcousticSheep claws back ground on Battery Life.

On paper, the specifications that actually differ: Type: In-ear sleep earbuds on the Ozlo Sleepbuds 2 versus Fabric headband with removable flat speakers on the SleepPhones Wireless by AcousticSheep; Size / Weight: 1.6 g per bud, about 11 mm tall on the Ozlo Sleepbuds 2 versus Ultra-thin flat speakers sewn into a soft pad; sizes S, M, L on the SleepPhones Wireless by AcousticSheep; Noise Control: Passive isolation plus noise masking (no ANC) on the Ozlo Sleepbuds 2 versus None (fabric only); relies on phone audio on the SleepPhones Wireless by AcousticSheep; Rated Battery: Up to 14 hours per charge on the Ozlo Sleepbuds 2 versus Up to 24 hours on the SleepPhones Wireless by AcousticSheep; Charging: Smart Case (roughly 2-3 extra charges per Tom's Guide) on the Ozlo Sleepbuds 2 versus Micro-USB, about 4 hours on the SleepPhones Wireless by AcousticSheep; Bluetooth: 5.3 with LE Audio on the Ozlo Sleepbuds 2 versus 5.0 with AAC on the SleepPhones Wireless by AcousticSheep.

Check current pricing at the merchant links below. Owners praise the Ozlo Sleepbuds 2 for smallest, lightest buds here: 1.6 g each and about 11 mm tall, roughly half the weight of the Soundcore Sleep A30 and up to 14 hours per charge, up from 10 hours on the original Sleepbuds; the most common complaint is no active noise cancellation; a Fast Company reviewer found AirPods Pro 2 blocked snoring better. Owners praise the SleepPhones Wireless by AcousticSheep for 24-hour rated battery, the longest here, enough for two nights and three band sizes and two fabrics (warm fleece or cooler Breeze), unlike one-size bands; the most common complaint is micro-USB charging that takes about 4 hours.