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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
White Noise Bone Conduction Bluetooth Speaker Sleep Instrument1. Material: ABS+PC plastic shell 2. Speaker: 8 ohm 2W 3. Frequency response: 20HZ 20KHZ 4. Bluetooth version: 5. 2 5. Decoding method: TF card (MP3 WMA FLAC APE WAV), Bluetooth (SBC) 6. TF card capacity: 32G (MAX) 7. Operating distance: about 10 meters 8. Normal working hours: play music for 15 hours 9. Prompt voice: English 10. LED lights: red and blue status indicator lights 11. Operation mode: multi function compound key 12. Battery capacity:
1. Material: ABS+PC plastic shell
2. Speaker: 8 ohm/2W
3. Frequency response: 20HZ-20KHZ
4. Bluetooth version: 5.2
5. Decoding method: TF card (MP3/WMA/FLAC/APE/WAV), Bluetooth (SBC)
6. TF card capacity: 32G (MAX)
7. Operating distance: about 10 meters
8. Normal working hours: play music for 15 hours
9. Prompt voice: English
10. LED lights: red and blue status indicator lights
11. Operation mode: multi-function compound key
12. Battery capacity: 500mAh/3.7V
13. Charging interface: TYPE-C
14. Charging time: 2 hours
15. Charging current: DC5V/310MA
16. Charging voltage: 5V
17. Place it under the pillow and sing softly at 360 degrees
18. 30 minutes/60 minutes free setting time and automatic shutdown
19. Dual speakers diffuse sound, 3D surround sound effect
20. TYPE-C charging interface, fully charged in 2 hours
21. Overcharge protection, slow power consumption
22. Dimensions: 89.4x59.3x12mm
23. Weight: 48.7 grams
Specification:
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4.5 ★★★★★
Based on 975 reviews
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Product Reviews
★★★★★ 5
Very image detailed, thorough history of WW II told through maps
Format: Hardcover
World War II Map by Map (DK History Map by Map) is a visually striking and informative guide to the pivotal events of World War II. Through detailed maps, the book offers a unique perspective on the war’s key battles, strategies, and turning points, providing a clear and accessible way to understand the conflict’s complex geography. Accompanied by concise descriptions and timelines, this book serves as both an educational resource and a compelling visual history. It is ideal for readers seeking a deeper understanding of the war’s global impact without feeling overwhelmed by text-heavy narratives. A must-have for history enthusiasts and visual learners alike.
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Reviewed in the United States on December 4, 2024
★★★★★ 4
Entertaining, informative, without being overwhelming.
Format: Hardcover, Format: Hardcover
Got it for, basically, half-off standard retail. At that price, it's a fine addition to the WWII library. Some interesting information displayed in a mostly entertaining way. I get that battle maps are always a challenge (maps are static - battles are dynamic). This does a fairly adequate job - better than most battle maps - though far from groundbreaking. item arrived well packed - no issues with binding (as some others seem to report). Though the book overall is a bit "warped" and several of the maps are mis-printed or mis-cut as to make them unusable. 3 bad out of 300 - not horrible - again at the price I paid. If the subject interest you - I'd suggest getting - but not a "must have".
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Reviewed in the United States on July 17, 2025
★★★★★ 5
So neat
Format: Hardcover
The pages are high quality and it's a fascinating read. It's a well put together book. It's also a great gift for history buffs. Overall quality is excellent.
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Reviewed in the United States on March 1, 2026
★★★★★ 5
For the history buff or student - this is worth the purchase
Format: Hardcover
Detailed, individual maps and history on the battles of World War II. It isn’t too overwhelming for the student and is an enjoyable read for the history buff. Hardback so it will ensure lots of reading and reviews, durable pages too (not those thin, flimsy, easily tearable pages!) - this book will likely stand the test of our schooling years and beyond.
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Reviewed in the United States on August 27, 2025
★★★★★ 5
Grandson gift
Format: Hardcover
This was purchased for my grandson for Christmas and he was thrilled with it. He collects all things pertaining to WWll.
Even his friends enjoyed it. Pictures clear and easy to read.
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Reviewed in the United States on January 23, 2026
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