The SRS-XB13 is about the size of a regular jam jar and does not weight much more than what you would expect
Sony SRS-XB13 review: A take it anywhere, play anything speaker
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Take it anywhere without worries! This portable speaker is waterproof and dustproof (IP67), with up to 16 hours' battery life. Create wide stereo
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Sony SRS-XB13 Bluetooth Speaker review
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Review: Sony SRS-XB13, the compact speaker you can take anywhere
Compact speaker with multiway strap: The XB13 is durable and portable, and includes a specially engineered strap to make it easier to travel with.
INCOMPLETE Sony SRS-XB13 EXTRA BASS Wireless Waterproof Speaker - Black