Free Shipping
Free Returns*
1-Year Guarantee

Kalsten | Bone conduction speaker

Regular price $53.99 $80.00 SAVE $26.01 (33% OFF) Sale price
/
3-Day Express Shipping
Easy 14-Day Returns
Support Mon–Fri
Color

Bring Your Music Anywhere - Transform Any Surface into Your Own Speaker!

Music is a personal experience, and you deserve to enjoy it wherever you go. The bone conduction Bluetooth speaker converts everyday items into your private audio system, enabling you to fill your environment with the tunes that inspire you.

✔ Convert Any Surface into a Speaker: Set it on a desk, a windowpane, or even your bicycle and witness the wonder – your beloved tracks, precisely where you prefer them.

✔ Enjoy Music Anywhere: Compact and lightweight, this portable speaker is ideal for cozy nights in or thrilling adventures outdoors.

✔ Crystal Clear Audio, Effortlessly: Experience powerful, immersive sound without the necessity for bulky traditional speakers.

✔ Always Connected: With Bluetooth, swiftly link the speaker to your smartphone and begin playing your favorite tunes right away.

Technical Specifications:
Material: Premium plastic and electronics
Dimensions: 10 x 4 cm
Color Options: Black, White
Connectivity: Bluetooth 5.0
Power Supply: Rechargeable battery (5 hours of usage)

Free standard shipping on all orders. No minimum purchase.

  • Ships to: United States
  • Processing: 1–4 business days (Mon–Fri)
  • Transit: 5–10 business days
  • Total delivery time: 6–14 business days
  • Order cut-off: 5:00 PM PST

You will receive a tracking number by email once your order ships. Please allow up to 48 hours for tracking to update.

See our full Shipping Policy.

You have 14 days from delivery to request a return.

  • Email support@open.shop with your order number to start a return.
  • Items must be unused, complete, and in their original packaging.
  • Return label: flat $9.99 USD, deducted from your refund — nothing to pay upfront.
  • Damaged, defective or incorrect items: we cover all return and replacement costs.
  • No restocking fees.
  • Exchanges: contact us and mention "exchange" — the new item ships once your return arrives.
  • Refunds are issued within 7 business days of inspection.

See our full Return Policy.

Questions about your order or our products? We're happy to help.

Open
Hooizolder 214
Drachten Friesland 9205CD
Netherlands

Email: support@open.shop

Customer Service:
Monday to Friday, 8:00 AM – 6:00 PM PST (excluding public holidays)

We reply to all messages within 24 hours on business days. Weekend messages are answered on Monday.

For quick answers, visit our FAQ page or use our Contact Form.