SlimeVR Butterfly Trackers
Open-source inertial full-body VR tracking
- Battery / power
- 90 mAh ↗
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Lowest recorded store prices take priority over announced or launch prices, within the selected source market. Currencies use the dated EUR reference rates. Deposits and recurring charges are excluded from price order; missing prices stay last. Original price records remain visible.
At a glance
The differences that matter
SlimeVR V1.2
Open-source inertial full-body VR tracking
- Battery / power
- 1350 mAh ↗
Published specifications and documented constraints. See the full comparison below for prices and sources.
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| Haptics & body trackingAdd a model |  |  |
|---|---|---|
| Prices · all markets | $279 USD≈ €250 EURECB 2026-10-12Global · Announced price · Preorder 1 offer records & sources$279 USD≈ €250 EURECB 2026-10-12 Global · Announced price PreorderCrowd Supply (official SlimeVR campaign) Core Set Bundle: six trackers, straps and dongle Official live campaign ordering section estimates Jan 31, 2027 dispatch. This is an estimate, not completed delivery. Shipping listed separately. Original source market label: International.Check merchant offer ↗Price source ↗ Checked 2026-10-12 | $259 USD≈ €232 EURECB 2026-10-12Global · Store price · Preorder 1 offer records & sources$259 USD≈ €232 EURECB 2026-10-12 Global · Store price PreorderCrowd Supply (official SlimeVR campaign) Core Set V1.2 (6+0): six trackers and straps Official ordering section estimates Feb 01, 2027 dispatch. $219 lower-body set is marked no longer available. Original source market label: International.Check merchant offer ↗Price source ↗ Checked 2026-10-12 |
| Designed for | Open-source inertial full-body VR tracking ↗ | Open-source inertial full-body VR tracking ↗ |
| Form factor | Body-worn Butterfly tracker set ↗ | Body-worn wireless tracker set ↗ |
| Tracking | Inertial full-body tracking ↗ | Inertial full-body tracking without base stations ↗ |
| Battery / power | 90 mAh ↗ | 1350 mAh ↗ |
| Charging | USB-C or optional charging dock ↗ | USB-C ↗ |
| Weight | Less than 10 g per tracker ↗ | Not verified |
| Software | Open-source SlimeVR ecosystem ↗ | Open-source SlimeVR Server ↗ |
| Sales | Official shop preorder ↗ | Not applicable to this category |
| Dimensions | 56 × 35 × 7 mm ↗ | Not applicable to this category |
| Runtime | Up to 48 hours ↗ | Up to 20 hours ↗ |
| Connectivity | Custom 2.4 GHz ESB radio with dedicated dongle; no Wi-Fi required ↗ | 2.4 GHz Wi-Fi ↗ |
| Refresh rate | 100-200 Hz target; not finalized ↗ | 100 Hz ↗ |
| Firmware | Wireless OTA updates ↗ | Not applicable to this category |
| Platforms | Not applicable to this category | Windows 8+, Linux, macOS and Android ↗ |
| Supply | Not applicable to this category | Original tracker official distributors listed as Crowd Supply and Mouser ↗ |
| IMU | Not applicable to this category | TDK ICM-45686 with QMC6309 magnetometer ↗ |
| Version | Not applicable to this category | v1.2 hardware shipped from June 2025 ↗ |
| Ecosystem | Not applicable to this category | SteamVR, OSC and VMC ↗ |
| Availability | Preorder; campaign shows manufacturer prototype photos. Production enclosure and colour may change. | Released hardware; current Core Set v1.2 is sold as a preorder with estimated February 1, 2027 shipment. |
| Editorial pick & release | No editorial ranking recorded | No editorial ranking recorded |
| Evidence | Manufacturer source Checked 2026-10-12 | Manufacturer source Checked 2026-10-12 |
Battery claims use different conditions and are not a controlled benchmark. “Not verified” is an evidence gap, not a missing feature. Prices are dated regional snapshots. Deposits, bundles and historical launch prices are labelled. Brightness measurement methods and battery workloads vary by manufacturer.