Woojer Strap Edge

Woojer Strap Edge
Basic Info
VR/AR	Virtual Reality, Augmented Reality
Type	Haptic wearable
Subtype	Haptic strap / belt
Platform	Platform-agnostic (audio-driven)
Creator	Woojer
Developer	Woojer
Manufacturer	Woojer
Announcement Date	August 2019 (Kickstarter)
Release Date	2020
Price	$99 (Kickstarter early bird), $179 (retail)
Website	https://www.woojer.com
Versions	Strap Edge
Requires	Audio source and headphones
Predecessor	Woojer Strap
Successor	Woojer Strap 3
System
Operating System	N/A
Chipset	Qualcomm Bluetooth audio SoC
CPU	N/A
GPU	N/A
Storage
Storage	N/A
Memory	N/A
SD Card Slot	No
Display
Display	N/A
Resolution	N/A
Refresh Rate	N/A
Image
Field of View	N/A
Horizontal FoV	N/A
Vertical FoV	N/A
Optics
Optics	N/A
Ocularity	N/A
IPD Range	N/A
Adjustable Diopter	N/A
Passthrough	N/A
Tracking
Tracking	N/A
Base Stations	N/A
Eye Tracking	N/A
Face Tracking	N/A
Hand Tracking	N/A
Body Tracking	N/A
Rotational Tracking	N/A
Positional Tracking	N/A
Audio
Audio	Pass-through stereo headphone output with built-in amplifier
Microphone	TRRS mic pass-through (via 3.5 mm)
Camera	N/A
Connectivity
Connectivity	Bluetooth 5.0, 3.5 mm line-in, USB-C audio-in
Ports	3.5 mm line-in, 3.5 mm headphone out, USB-C
WiFi	No
Bluetooth	Yes (5.0, Qualcomm, aptX Low Latency)
Power	Rechargeable lithium-ion battery
Battery Capacity	3,350 mAh (4.2 V)
Battery Life	Up to 8 hours
Charge Time	Approximately 3 hours
Device
Dimensions	Adjustable strap, one size fits all
Weight	N/A
Material	Fabric strap with control module
Headstrap	N/A
Haptics	Single Osci TRX52 transducer (1-200 Hz)
Color	Black
Sensors	N/A
Input	Headphones/sensation volume controls
Compliance	N/A

Property "Type" (as page type) with input value "Haptics|Haptic]] wearable" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process. Property "Announcement Date" (as page type) with input value "August 2019 (Kickstarter)" contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.

The Woojer Strap Edge is a wearable haptic device developed and manufactured by Woojer, an Israeli company that builds audio-driven tactile feedback wearables for gaming, virtual reality, music, and film. Announced through a Kickstarter campaign in August 2019 and shipped to backers in 2020, the Strap Edge is a single-transducer haptic belt that converts the low-frequency content of an audio signal into physical vibrations felt against the body. It sits at the entry level of Woojer's "Edge" generation, below the six-transducer Woojer Vest Edge, and is designed to be worn around the chest, waist, abdomen, arm, or leg. Unlike haptic systems that require per-title software integration, the Strap Edge works with any audio source over Bluetooth, a 3.5 mm line input, or a USB-C audio connection, making it compatible out of the box with PC, consoles, mobile devices, and VR headsets.

Development

Woojer launched the "Woojer Edge" on Kickstarter on August 13, 2019, presenting two products: the single-transducer Strap Edge and the multi-transducer Vest Edge. The campaign met its US$20,000 funding goal in under two hours. The Edge line followed Woojer's earlier haptic straps, which the company had previously brought to market through crowdfunding, and it used a 52 mm Osci transducer designated the "TRX52". At launch the Strap Edge was offered to backers at an early-bird price of $99, with a planned retail price of $179. The product reached general availability in 2020.

Technology

The Strap Edge is built around Woojer's patented Osci ("Oscillating Frame") transducer technology. The device splits an incoming audio stream so that low frequencies are reproduced as tactile vibration through the transducer pressed against the wearer's body, while the mid and high frequencies pass through unaltered to a connected pair of headphones. This design lets users feel the bass and physical impacts of a game, film, or song in sync with what they hear, rather than relying on a subwoofer or separate haptic programming.

The Strap Edge uses a single Osci TRX52 transducer with a frequency response of 1 Hz to 200 Hz. This is the principal difference between it and the larger Woojer Vest Edge, which carries six of the same transducers arranged as a stereo array (two at the front, two at the back, and two on the sides). Because the strap carries only one transducer, reviewers described its sensation as more localized and less enveloping than the vest, but appreciated its portability and lower cost.

For audio handling the unit integrates a Qualcomm Bluetooth 5.0 module supporting the aptX, aptX Low Latency, aptX HD, AAC, and SBC codecs, paired with 192 kHz stereo digital-to-analog converter channels and a built-in analog headphone amplifier by Texas Instruments rated at 105 mW into 16-ohm headphones at 0.1% total harmonic distortion. Low-latency Bluetooth is important for interactive use, since it keeps the haptic vibration aligned with on-screen action.

Hardware and Design

The Strap Edge consists of an adjustable fabric belt with a single control module housing the transducer, battery, amplifier, and controls. It is a one-size-fits-all design that can be worn across the chest, around the waist or abdomen, cross-body, or strapped to an arm or leg. The control module carries independent volume controls for the headphone output and the haptic sensation strength, along with LED status indicators, and the unit ships with a fabric carrying pouch so it can be folded away and transported.

Connectivity is handled through a 3.5 mm stereo line-in (supporting a TRRS connection for headsets with a microphone), a 3.5 mm headphone output, and a USB-C port used for wired audio input, charging, and firmware updates, in addition to the Bluetooth radio. Power comes from a 3,350 mAh, 4.2 V rechargeable lithium-ion battery rated for up to eight hours of playback depending on volume and sensation level, with a recharge time of roughly three hours.

Woojer Strap Edge specifications

Specification	Detail
Type	Single-transducer haptic strap / belt
Transducer	1x Osci TRX52 (52 mm)
Frequency response	1 Hz - 200 Hz
Bluetooth	5.0 (Qualcomm), aptX / aptX LL / aptX HD / AAC / SBC
DAC	192 kHz stereo channels
Headphone amplifier	Texas Instruments, 105 mW into 16 ohm, 0.1% THD
Inputs	3.5 mm line-in (TRRS), USB-C audio-in, Bluetooth
Outputs	3.5 mm headphone out (TRRS)
Battery	3,350 mAh, 4.2 V lithium-ion
Battery life	Up to 8 hours
Charge time	Approximately 3 hours
Controls	Independent headphone and sensation volume, LED indicators
Launch price	$99 (Kickstarter early bird) / $179 (retail)

Use in VR and gaming

Because the Strap Edge is driven entirely by an audio signal and does not need per-game integration, it can add body-level haptic feedback to any experience that produces sound, including PC games, console games, films, and music. Reviewers and Woojer's own marketing positioned it as a companion for at-home gaming and virtual reality, where feeling explosions, engine rumble, gunfire, and footsteps adds to immersion. Its small size and battery operation mean it can be paired with a standalone headset such as the Meta Quest or with a tethered PC VR or PlayStation VR setup without any dedicated software, in contrast to programmable haptic suits whose effects must be authored into each supported title. This audio-driven, plug-and-play approach is the same general category occupied by products from bHaptics and Tactical Haptics, although those companies emphasize software-mapped, multi-actuator suits and controllers rather than a single audio-reactive transducer.

Reception

Reviews of the Strap Edge generally praised its portability, ease of use, and ability to work with any audio source, while noting that a single transducer delivers a more modest, localized sensation than the multi-transducer Vest Edge. NikkTech concluded that the strap was an easy product to recommend for people new to wearable haptics, while observing that experienced users or those wanting full-body feedback would be better served by the vest. Headphonesty, reviewing it as a "haptic DAC/amp," highlighted the built-in headphone amplifier and the way the device adds a physical dimension to both games and music.

Successors

Woojer later succeeded the Edge generation with a new "Series 3" lineup, including the Woojer Strap 3 and Woojer Vest 3, which retained the audio-driven Osci approach while updating the hardware and adding officially licensed "Made for Meta" support for standalone headsets such as the Meta Quest 3S. The Series 3 strap moved to a wider 1 to 250 Hz frequency range driven by an onboard digital signal processor.

See Also

• Woojer
• Haptics
• BHaptics
• Tactical Haptics
• Virtual Reality