> For the complete documentation index, see [llms.txt](https://singsing.gitbook.io/singsing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://singsing.gitbook.io/singsing/platform/deprecated/sing-and-earn-deprecated/elements/nft-microphones.md).

# NFT Microphones

NFT Microphone is the property used to participate in singing modes at SingSing and receive attractive rewards every day.

NFT Microphone is an ERC-721-format token on the BSC. NFTs are opened from **Microphone Boxes**.

NFT Microphone has 4 indicators as follows:

1. **Earning Effect**: Is the indicator showing the level of Token rewards that can be received after each singing turn.
2. **Earning Score Range**: The range of score required to obtain the reward.
3. **Durability**: The current durability of the Microphone, if it goes to 0, needs to be repaired.
4. **Resilience**: Depreciate the microphone's durability after each energy consumed.

#### Microphone Boxes

Microphone Boxes are released by SingSing with 5 tiers, each tier will have a different rate of opening up different microphone tiers.

<table><thead><tr><th width="157">Tier</th><th width="120">Bronze Box</th><th width="110">Silver Box</th><th width="109">Gold Box</th><th width="120">Platinum Box</th><th>Diamond Box</th></tr></thead><tbody><tr><td>Bronze Mic</td><td>80%</td><td>6%</td><td>0%</td><td>0%</td><td>0%</td></tr><tr><td>Silver Mic</td><td>19%</td><td>82%</td><td>6%</td><td>0%</td><td>0%</td></tr><tr><td>Gold Mic</td><td>1%</td><td>9%</td><td>82%</td><td>10%</td><td>0%</td></tr><tr><td>Platinum Mic</td><td>0%</td><td>3%</td><td>9%</td><td>80%</td><td>12%</td></tr><tr><td>Diamond Mic</td><td>0%</td><td>0%</td><td>3%</td><td>10%</td><td>88%</td></tr></tbody></table>

#### Wood Microphone

* Wood Microphone is the lowest value Microphone and has Sing and Earn functions, except Minting.
* Wood Microphone is not repairable and breaks down on its own after **90 days** of possession.
* Users need to upgrade to Bronze Microphone to be able to continue using it.

#### Upgrade from Wood Microphone to Bronze Microphone

* Wood Microphone cannot be repaired, after using up its durability, users can upgrade to Bronze Microphone at a cost of **$20**
* The Earning Effect stat will be a random number when upgraded from a Wood Microphone to a Bronze Microphone, regardless of any factors.

#### Microphone Transfer and Usage Policy

* After transferring a microphone in/out of a crypto wallet or sending an item in the app, you must wait 24 hours before using/minting it.
* Newly purchased microphones from the marketplace can be used immediately.