Comparing Bose SoundLink Revolve and Harman Kardon Onyx Studio 4
- Deep, loud and immersive sound, with true 360 degree coverage
- Built-in mic for speakerphone to take clear conference or personal calls out loud with a wireless range of approximately 30 feet.
- Seamless aluminum body is durable and water resistant (IPX4)
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- Amplify your listening experience by wirelessly connecting more than 100 HK connect+ enabled speakers.
- The rechargeable battery supports up to 8 hours of playtime
- Stream music wirelessly via Bluetooth to enjoy room-filling sound. Connect up to 2 smart devices at the same time and take turns playing music.
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Expert reviews 
Harman Kardon Onyx Studio 4 ranks #18 and Bose SoundLink Revolve ranks #31
Customers like Harman Kardon Onyx Studio 4 a bit moreHarman Kardon Onyx Studio 4, the cheaper option, tends to get more favorable reviews than Bose SoundLink Revolve. In our awesomeness score Harman Kardon Onyx Studio 4 ranks #13 out of 331 and Bose SoundLink Revolve ranks #24 out of 331.
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Bose SoundLink Revolve is more popular
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|Table: Top compared alternatives for Bose SoundLink Revolve and Harman Kardon Onyx Studio 4|
|Beats Pill+||$180||Better Reviews|
|Harman Kardon Onyx Studio 5||$175|
|JBL Pulse 3||$149|
|JBL Xtreme 2||$200|
Speakers range from not being able to handle even a drop of water to being able to be fully submerged in water for several minutes. Do you plan to take your speaker outside? To the beach? To the pool? In the shower? Then you definitely need to verify the level of water resistance before purchasing. You can tell the water resistance by the IP rating—the higher the rating, the more resistant the speaker is to the elements. For reference, the first digit refers to dust protection and the second digit refers to water protection. It reads as: IP68. Anything higher than IP66 will be dust- and splash-proof, meaning it can handle some contact with water, but cannot be fully submerged or soaked.
Battery life for Bluetooth speakers is measured in milliampere hours (mAh). Manufacturers will report the battery life of a speaker in the average number of hours it takes to empty from a full charge. Keep in mind this number is based on medium levels of usage. If you play the speaker on full volume, it will drain the battery faster. Some specialty features like using the speaker to charge your phone or casting an LED light show will also drain the battery faster. The manufacturer reported number is just an estimate, and may be slightly different based on your usage.
It’s also important to consider is the type of battery. Rechargeable lithium-ion (LI-ion) batters are ideal, but some speakers only take standard or rechargeable AA/AAA/C/D batteries. You may even find Bluetooth speakers that recharge via solar power—great for outdoor use!