Standard Delivery Available
Enter Pincode For Delivery Estimates
Key Features
Key Features
- Orientation Type: In Ear
- Connectivity: Bluetooth, Version 5.3
- Battery Life: 28 Hours
- Fast Charging: Yes
- USP: Breathable Fit, Dynamic Driver, Open Design
- Warranty: 12 Months Warranty
Specifications
Product Category
Device Type
- Truly Wireless Earbuds
Suitable For
- Entertainment
Form Factor
- In-Ear
Manufacturer Details
Brand
- Sennheiser
Model Series
- Accentum Open
Model Number
- OTW1BLK
Product Dimensions (Open)
Dimensions In CM (WxDxH)
- 1.82 x 1.93 x 3.34
Product Weight
- 8.7 g
Dimensions In Inches (WxDxH)
- 0.72 x 0.76 x 1.31
Sound
Frequency Response
- 25 Hz - 15 kHz
Additional Sound Features
- Sennheiser Sound Tuning
Sound Configuration
- Stereo Sound
Sensitivity
- 109 dB
Impedance
- 50 Ohm
Noise Cancellation Type
- No Noise Cancellation
Total Harmonic Distortion
- < 0.08 %
Deep Bass
- Yes
Physical Attributes
Audio Jack
- Not Applicable
Device Control Type
- On-device Controls
Device Controls
- Volume Control, Power On/Off
Driver/Diaphragm Features
- Dynamic Driver
Additional Body Features
- Breathable Fit & Lightweight Comfort, IPX4 Splash & Sweat Resistance
Functions
Compatible Devices
- Desktops | Tablets | Mobile Phones | Laptops
Mic Specifications
Microphone Availability
- Yes
Microphone Features
- Mic Principle: MEMS, Beamforming for Noise Reduction
Microphone Placement
- Built-in Mic
Smart Functions
Smart Sensors
- In-ear Sensor, Capacitive Touch Sensor
Network Connectivity
Bluetooth Supported
- Yes
Bluetooth Profile
- AVRCP, A2DP, HFP
Bluetooth Specifications
- Bluetooth 5.3
Bluetooth Range Up To
- 10 Meters
Battery Details
Battery Technology
- Lithium-Ion
Battery Type
- Non-Removable
Battery Capacity
- 36 mAh
Standard Battery Life
- 28 Hours Playtime
Charging
Charging Pin Type
- USB Type-C
Fast Charging Capability
- Yes
Battery Charge Time
- 1 Hour
Charging Case
Charging Case Height
- 5.17 cm
Charging Case Depth
- 2.53 cm
Charging Case Battery Life
- 24 Hours Overall Music Playtime
Dimensions in CM (W x D x H)
- 5.01 x 2.53 x 5.17
Charging Case Weight
- 29.3 g
Charging Case Battery Capacity
- 400 mAh
Case Color
- Black
Charging Case Width
- 5.01 cm
Materials & Durability
Body Material
- Polytex
Resistance Type
- Water Resistant
Aesthetics
Brand Color
- Black
Color
- BLACK
In The Box
Documents
- 1 x Quick Guide, 1 x Safety Guide, 1 x Warranty Card
Main product
- 1 x Earbud U
Accessories
- USB Charging Cable
Package Includes
- 1 x Earbud U, 1 x USB Charging Cable, 1 x Quick Guide, 1 x Safety Guide, 1 x Compliance Sheet, 1 x Warranty Card
Others
- Compliance Sheet
Generic Name
- Earphone/Headphone
Packaged Dimensions
After Sales & Services
Warranty on Main Product
- 12 Months
Warranty Type
- Carry-In
Standard Warranty Includes
- Manufacturing Defects
Standard Warranty Excludes
- Physical Damage
Installation & Demo
- Not Applicable
Installation & Demo applicable
- No
Company Contact Information
Customer Support Number
- 18005727662
Customer Support Email
- customersupport@croma.com
Manufacturer/Importer/Marketer Name & Address
- Manufacturer Name & Address: Charter Media (Dongguan) Co, Ltd. DANING VILLAGE, HUMEN TOWN, DONGGUANG, GUANGDONG,China-523930 | Importer Name & Address: Sonova Consumer Hearing India Pvt. Ltd., 510 5th Time Tower, MG Road, Gurugram, Haryana, 122002
Country of Manufacture
- China
Country of Brand Origin
- Germany
Croma Service Promise
Customer Support Email
- customersupport@croma.com
Registered Name and Address
- Infiniti Retail Ltd. - Unit No. 701 & 702, 7th Floor, Kaledonia, Sahar Road, Andheri (East); Mumbai - 400069. India
Customer Support Number
- 1800 572 7662
Customer Care Contact Person
- Grievance Officer
Overview
Robust Engineering Excellence
Designed in Germany, the Sennheiser ACCENTUM Open TWS Bluetooth Earbuds showcase precision engineering combined with advanced acoustic technology. Hence, you can expect consistent performance, refined sound quality, and lasting durability with every use.
Extended Battery Life
With up to 28 hours of total battery life, these TWS earbuds keep you connected for longer sessions. Consequently, whether you are commuting, working, travelling, or enjoying entertainment, you can listen without interruption throughout the day.
Ultra-Fast Charging
Thanks to the ultra-fast charging support of these TWS earbuds, just 10 minutes of charging provides up to 1.5 hours of listening time. Therefore, you can always power up quickly and stay on the move even when pressed for time.
Crystal-Clear Calls with AI Voice Pickup
Incorporating two microphones with beamforming technology on each earbud, along with advanced AI voice pickup, these Bluetooth earbuds ensure calls are crisp and natural. Consequently, your voice remains clear and distinct even in crowded or noisy environments.
Multipoint Connectivity
Supporting multipoint connection, these earbuds let you pair with two devices simultaneously. Thus, you can switch seamlessly between your smartphone, laptop, or tablet without the hassle of manual reconnection.
Splash-Resistant Build
With reliable splash resistance, these TWS earbuds are well-suited for daily use, light workouts, or unexpected weather conditions. Hence, you can enjoy your playlists confidently without worrying about sweat or minor splashes.
Stylish and Comfortable Design
Crafted in an elegant cream finish, these Sennheiser earbuds not only deliver quality audio but also exude sophistication. Moreover, their ergonomic and lightweight design ensures lasting comfort, even during extended listening sessions or long calls.




